- Expanded LaTeX dictionary with
\max
,\min
,\sup
,\inf
and\lim
functions - Added
Supremum
andInfimum
functions - Added numerical evaluation of limits with
Limit
functions andNLimit
functions, using a Richardson Extrapolation.
console.info(ce.parse("\\lim_{x\\to0} \\frac{\\sin x}{x}").N().json);
// -> 1
console.info(
ce.box(["NLimit", ["Divide", ["Sin", "_"], "_"], 0]).evaluate().json
);
// -> 1
console.info(ce.parse("\\lim_{x\\to \\infty} \\cos \\frac{1}{x}").N().json);
// -> 1
-
Added
Assign
andDeclare
functions to assign values to symbols and declare symbols with a domain. -
Block
evaluations with local variables work now. For example:
ce.box(["Block", ["Assign", "c", 5], ["Multiply", "c", 2]]).evaluate().json;
// -> 10
- You can return from the middle of a block with the
Return
statement:
ce
.box(["Block", ["Assign", "c", 5], ["Return", "c"], ["Multiply", "c", 2]])
.evaluate().json;
// -> 5
Release Date: 2023-10-12
- The
Nothing
domain has been renamed toNothingDomain
- The
Functions
,Maybe
,Sequence
,Dictionary
,List
andTuple
domain constructors have been renamed toFunctionOf
,OptArg
,VarArg
,DictionaryOf
,ListOf
andTupleOf
, respectively. - Domains no longer require a
["Domain"]
expression wrapper, so for examplece.box("Pi").domain
returns"TranscendentalNumbers"
instead of["Domain", "TranscendentalNumbers"]
. - The
VarArg
domain constructor now indicates the presence of 0 or more arguments, instead of 1 or more arguments. - The
MaybeBooleans
domain has been dropped. Use["Union", "Booleans", "NothingDomain"]
instead. - The
ce.defaultDomain
has been dropped. The domain of a symbol is now determined by the context in which it is used, or by thece.assume()
method. In some circumstances, the domain of a symbol can beundefined
.
- Symbolic derivatives of expressions can be calculated using the
D
function. For example,ce.box(["D", ce.parse("x^2 + 3x + 1"), "x"]).evaluate().latex
returns"2x + 3"
.
- Some frequently used expressions are now available as predefined constants,
for example
ce.Pi
,ce.True
andce.Numbers
. - Improved type checking and inference, especially for functions with complicated or non-numeric signatures.
- Invoking a function repeatedly would invoke the function in the original scope rather than using a new scope for each invocation.
Release Date: 2023-09-29
- The methods
ce.let()
andce.set()
have been renamed toce.declare()
andce.assign()
respectively. - The method
ce.assume()
requires a predicate. - The signatures of
ce.assume()
andce.ask()
have been simplified. - The signature of
ce.pushScope()
has been simplified. - The
expr.freeVars
property has been renamed toexpr.unknowns
. It returns the identifiers used in the expression that do not have a value associated with them. Theexpr.freeVariables
property now return the identifiers used in the expression that are defined outside of the local scope and are not arguments of the function, if a function.
-
Domain Inference when the domain of a symbol is not set explicitly (for example with
ce.declare()
), the domain is inferred from the value of the symbol or from the context of its usage. -
Added
Assume
,Identity
,Which
,Parse
,N
,Evaluate
,Simplify
,Domain
. -
Assignments in LaTeX:
x \\coloneq 42
produce["Assign", "x", 42]
-
Added
ErfInv
(inverse error function) -
Added
Factorial2
(double factorial)
-
Functions can now be defined:
- using
ce.assign()
orce.declare()
- evaluating LaTeX:
(x, y) \\mapsto x^2 + y^2
- evaluating MathJSON:
["Function", ["Add", ["Power", "x", 2], ["Power", "y", 2]]], "x", "y"]
- using
-
Function can be applied using
\operatorname{apply}
or the operators\rhd
and\lhd
:\operatorname{apply}(f, x)
f \rhd x
x \lhd f
See Adding New Definitions and Functions.
- Added
FixedPoint
,Block
,If
,Loop
- Added
Break
,Continue
andReturn
statements
- Added numeric approximation of derivatives, using an 8-th order centered
difference approximation, with the
ND
function. - Added numeric approximation of integrals, using a Monte Carlo method with
rebasing for improper integrals, with the
NIntegrate
function - Added symbolic calculation of derivatives with the
D
function.
Added support for collections such as lists, tuples, ranges, etc...
See Collections
Collections can be used to represent various data structures, such as lists, vectors, matrixes and more.
They can be iterated, sliced, filtered, mapped, etc...
["Length", ["List", 19, 23, 5]]
// -> 3
["IsEmpty", ["Range", 1, 10]]
// -> "False"
["Take", ["Linspace", 0, 100, 50], 4]
// -> ["List", 0, 2, 4, 6]
["Map", ["List", 1, 2, 3], ["Function", "x", ["Power", "x", 2]]]
// -> ["List", 1, 4, 9]
["Exclude", ["List", 33, 45, 12, 89, 65], -2, 2]
// -> ["List", 33, 12, 65]
["First", ["List", 33, 45, 12, 89, 65]]
// -> 33
- The documentation at https://cortexjs.io/compute-engine/ has been significantly rewritten with help from an AI-powered writing assistant.
- The LaTeX string returned in
["Error"]
expression was incorrectly tagged asLatex
instead ofLatexString
.
Release Date: 2023-09-14
- The
ce.serialize()
function now takes an optionalcanonical
argument. Set it tofalse
to prevent some transformations that are done to produce more readable LaTeX, but that may not match exactly the MathJSON. For example, by defaultce.serialize(["Power", "x", -1])
returns\frac{1}{x}
while ce.serialize(["Power", "x", -1], {canonical: false}) returnsx^{-1}
. - Improved parsing of delimiters, i.e.
\left(
,\right]
, etc... - Added complex functions
Real
,Imaginary
,Arg
,Conjugate
,AbsArg
. See https://cortexjs.io/compute-engine/reference/complex/ - Added parsing and evaluation of
\Re
,\Im
,\arg
,^\star
(Conjugate). - #104 Added the
["ComplexRoots", x, n]
function which returns the nthroot ofx
. - Added parsing and evaluation of statistics functions
Mean
,Median
,StandardDeviation
,Variance
,Skewness
,Kurtosis
,Quantile
,Quartiles
,InterquartileRange
,Mode
,Count
,Erf
,Erfc
. See https://cortexjs.io/compute-engine/reference/statistics/
Release Date: 2023-09-13
- The entries in the LaTeX syntax dictionary can now have LaTeX triggers
(
latexTrigger
) or triggers based on identifiers (identifierTrigger
). The former replaces thetrigger
property. The latter is new. An entry with atriggerIdentifier
ofaverage
will match\operatorname{average}
,\mathrm{average}
and other variants. - The
ce.latexOptions
andce.jsonSerializationOptions
properties are more robust. They can be modified directly or one of their properties can be modified.
-
Added more functions and symbols supported by
expr.compile()
:Factorial
postfix operator5!
Gamma
function\Gamma(2)
LogGamma
function\operatorname{LogGamma}(2)
Gcd
function\operatorname{gcd}(20, 5)
Lcm
function\operatorname{lcm}(20, 5)
Chop
function\operatorname{chop}(0.00000000001)
Half
constant\frac{1}{2}
- 'MachineEpsilon' constant
GoldenRatio
constantCatalanConstant
constantEulerGamma
constant\gamma
Max
function\operatorname{max}(1, 2, 3)
Min
function\operatorname{min}(13, 5, 7)
- Relational operators:
Less
,Greater
,LessEqual
,GreaterEqual
, 'Equal', 'NotEqual' - Some logical operators and constants:
And
,Or
,Not
,True
,False
-
More complex identifiers syntax are recognized, including
\\mathbin{}
,\\mathord{}
, etc...\\operatorname{}
is the recommended syntax, though: it will display the identifier in upright font and with the propert spacing, and is properly enclosing. Some commands, such as\\mathrm{}
are not properly enclosing: two adjacent\\mathrm{}
command could be merged into one. -
Environments are now parsed and serialized correctly.
-
When parsing LaTeX, function application is properly handled in more cases, including custom functions, e.g.
f(x)
-
When parsing LaTeX, multiple arguments are properly handled, e.g.
f(x, y)
-
Add LaTeX syntax for logical operators:
And
:\land
,\operatorname{and}
(infix or function)Or
:\lor
,\operatorname{or}
(infix or function)Not
:\lnot
,\operatorname{not}
(prefix or function)Xor
:\veebar
(infix)Nand
:\barwedge
(infix)Nor
:^^^^22BD
(infix)Implies
:\implies
(infix)Equivalent
:\iff
(infix)
-
When a postfix operator is defined in the LaTeX syntax dictionary of the form
^
plus a single token, a definition with braces is added automatically so that both forms will be recognized. -
Extended the LaTeX dictionary with:
floor
ceil
round
sgn
exp
abs
gcd
lcm
apply
-
Properly handle inverse and derivate notations, e.g.
\sin^{-1}(x)
,\sin'(x)
,\cos''(x)
, \cos^{(4)}(x)or even
\sin^{-1}''(x)`
Release Date: 2023-09-09
- Some expressions can be compiled to Javascript. This is useful to evaluate an
expression many times, for example in a loop. The compiled expression is
faster to evaluate than the original expression. To get the compiled
expression, use
expr.compile()
. Read more at https://cortexjs.io/compute-engine/guides/compiling
- Fixed parsing and serialization of extended LaTeX synonyms for
e
andi
. - Fixed serialization of
Half
. - Fixed serialization of
Which
- Improved serialization of
["Delimiter"]
expressions.
Release Date: 2023-09-08
- Made customization of the LaTeX dictionary simpler. The
ce.latexDictionary
property can be used to access and modify the dictionary. The documentation at https://cortexjs.io/compute-engine/guides/latex-syntax/#customizing-the-latex-dictionary has been updated.
Release Date: 2023-09-08
- New API for the
Parser
class.
- The
ComputeEngine
now exports thebignum()
andcomplex()
methods that can be used to create bignum and complex numbers from strings or numbers. The methodsisBigNum()
andisComplex()
have also been added to check if a value is a bignum (Decimal
) or complex (Complex
) number, for example as returned byexpr.numericValue
. - #69
\leq
was incorrectly parsed asEquals
instead ofLessEqual
- #94 The
\exp
command was not parsed correctly. - Handle
PlusMinus
in infix and prefix position, i.e.a\pm b
and\pm a
. - Improved parsing, serialization
- Improved simplification
- Improved evaluation of
Sum
andProduct
- Support complex identifiers (i.e. non-latin scripts, emojis).
- Fixed serialization of mixed numbers.
Release Date: 2022-12-01
Work around unpckg.com issue with libraries using BigInt.
Release Date: 2022-11-27
- The
expr.symbols
property return an array ofstring
. Previously it returned an array ofBoxedExpression
.
- Rewrote the rational computation engine to use JavaScript
bigint
instead ofDecimal
instances. Performance improvements of up to 100x. expr.freeVars
provides the free variables in an expression.- Improved performance of prime factorization of big num by x100.
- Added
["RandomExpression"]
- Improved accuracy of some operations, for example
expr.parse("1e999 + 1").simplify()
- When
ce.numericMode === "auto"
, square roots of negative numbers would return an expression instead of a complex number. - The formatting of LaTeX numbers when using
ce.latexOptions.notation = "engineering"
or"scientific"
was incorrect. - The trig functions no longer "simplify" to the less simple exponential formulas.
- The canonical order of polynomials now orders non-lexicographic terms of degree 1 last, i.e. "ax^2+ bx+ c" instead of "x + ax^2 + bx".
- Fixed evaluation of inverse functions
- Fixed
expr.isLess
,expr.isGreater
,expr.isLessEqual
,expr.isGreaterEqual
and["Min"]
,["Max"]
Release Date: 2022-11-18
- The signature of
ce.defineSymbol()
,ce.defineFunction()
andce.pushScope()
have changed
- When a constant should be held or substituted with its value can now be more
precisely controlled. The
hold
symbol attribute is nowholdUntil
and can specify at which stage the substitution should take place.
- Some constants would return a value as bignum or complex even when the
numericMode
did not allow it. - Changing the value or domain of a symbol is now correctly taken into account.
Changes can be made with
ce.assume()
,ce.set()
orexpr.value
. - When a symbol does not have a value associated with it, assumptions about it (e.g. "x > 0") are now correctly tracked and reflected.
Release Date: 2022-11-17
expr.isLiteral
has been removed. Useexpr.numericValue !== null
andexpr.string !== null
instead.
- Calling
ce.forget()
would not affect expressions that previously referenced the symbol.
- More accurate calculations of some trig functions when using bignums.
- Improved performance when changing a value with
ce.set()
. Up to 10x faster when evaluating a simple polynomial in a loop. ce.strict
can be set tofalse
to bypass some domain and validity checks.
Release Date: 2022-11-15
- The head of a number expression is always
Number
. Useexpr.domain
to be get more specific info about what kind of number this is. - By default,
ce.box()
andce.parse()
return a canonical expression. A flag can be used if a non-canonical expression is desired. - The API surface of
BoxedExpression
has been reduced. The propertiesmachineValue
,bignumValue
,asFloat
,asSmallInteger
,asRational
etc... have been replaced with a singlenumericValue
property. parseUnknownSymbol
is nowparseUnknownIdentifier
-
Support angles in degrees with
30\degree
,30^\circ
and\ang{30}
. -
More accurate error expressions, for example if there is a missing closing delimiter an
["Error", ["ErrorCode", "'expected-closing-delimiter'", "')'"]]
is produced. -
["Expand"]
handles more cases -
The trig functions can now have a regular exponent, i.e.
\cos^2(x)
in addition to-1
for inverse, and a combination of\prime
,\doubleprime
and'
for derivatives. -
ce.assume()
handle more expressions and can be used to define new symbols by domain or value. -
Better error message when parsing, e.g.
\sqrt(2)
(instead of\sqrt{2}
) -
Better simplification for square root expressions:
\sqrt{25x^2}
->5x
-
Improved evaluation of
["Power"]
expressions, including for negative arguments and non-integer exponents and complex arguments and exponents. -
Added
Arccot
,Arcoth
,Arcsch
,Arcscc
,Arsech
andArccsc
-
expr.solve()
returns result for polynomials of order up to 2. -
The
pattern.match()
function now work correctly for commutative functions, i.e.ce.pattern(['Add', '_a', 'x']).match(ce.parse('x+y')) -> {"_a": "y"}
-
Added
ce.let()
andce.set()
to declare and assign values to identifiers. -
Preserve exact calculations involving rationals or square root of rationals.
\sqrt{\frac{49}{25}}
->\frac{7}{5}
-
Addition and multiplication provide more consistent results for
evaluate()
andN()
. Evaluate returns an exact result when possible.- EXACT
- 2 + 5 -> 7
- 2 + 5/7 -> 19/7
- 2 + √2 -> 2 + √2
- 2 + √(5/7) -> 2 + √(5/7)
- 5/7 + 9/11 -> 118/77
- 5/7 + √2 -> 5/7 + √2
- 10/14 + √(18/9) -> 5/7 + √2
- √2 + √5 -> √2 + √5
- √2 + √2 -> 2√2
- sin(2) -> sin(2)
- sin(π/3) -> √3/2
- APPROXIMATE
- 2 + 2.1 -> 4.1
- 2 + √2.1 -> 3.44914
- 5/7 + √2.1 -> 2.16342
- sin(2) + √2.1 -> 2.35844
- EXACT
-
More consistent behavior of the
auto
numeric mode: calculations are done withbignum
andcomplex
in most cases. -
JsonSerializationOptions
has a new option to specify the numeric precision in the MathJSON serialization. -
Shorthand numbers can now be strings if they do not fit in a float-64:
// Before
["Rational", { "num": "1234567890123456789"}, { "num": "2345678901234567889"}]
// Now
["Rational", "1234567890123456789", "2345678901234567889"]
\sum
is now correctly parsed and evaluated. This includes creating a local scope with the index and expression value of the sum.
- The parsing and evaluation of log functions could produce unexpected results
- The
\gamma
command now correctly maps to["Gamma"]
- Fixed numeric evaluation of the
["Gamma"]
function when using bignum - #57 Substituting
0
(i.e. withexpr.subs({})
) did not work. - #60 Correctly parse multi-char symbols with underscore, i.e.
\mathrm{V_a}
- Parsing a number with repeating decimals and an exponent would drop the exponent.
- Correct calculation of complex square roots
\sqrt{-49}
->7i
- Calculations were not always performed as bignum in
"auto"
numeric mode if the precision was less than 15. Now, if the numeric mode is"auto"
, calculations are done as bignum or complex numbers. - If an identifier contained multiple strings of digits, it would not be
rendered to LaTeX correctly, e.g.
V20_20
. - Correctly return
isReal
for real numbers
Release Date: 2022-10-02
-
Corrected the implementation of
expr.toJSON()
,expr.valueOf()
and added the esoteric[Symbol.toPrimitive]()
method. These are used by JavaScript when interacting with other primitive types. A major change is thatexpr.toJSON()
now returns anExpression
as an object literal, and not a string serialization of theExpression
. -
Changed from "decimal" to "bignum". "Decimal" is a confusing name, since it is used to represent both integers and floating point numbers. Its key characteristic is that it is an arbitrary precision number, aka "bignum". This affects
ce.numericMode
which now usesbignum
instead ofdecimal',
expr.decimalValue->
expr.bignumValue,
decimalValue()->
bignumValue()`
- Numerical evaluation of expressions containing complex numbers when in
decimal
orauto
mode produced incorrect results. Example:e^{i\\pi}
Release Date: 2022-09-30
- The
ce.latexOptions.preserveLatex
default value is nowfalse
- The first argument of the
["Error"]
expression (default value) has been dropped. The first argument is now an error code, either as a string or an["ErrorCode"]
expression.
- Much improved LaTeX parser, in particular when parsing invalid LaTeX. The
parser now avoids throwing, but will return a partial expression with
["Error"]
subexpressions indicating where the problems were. - Implemented new domain computation system (similar to type systems in programming languages)
- Added support for multiple signatures per function (ad-hoc polymorphism)
- Added
FixedPoint
,Loop
,Product
,Sum
,Break
,Continue
,Block
,If
,Let
,Set
,Function
,Apply
,Return
- Added
Min
,Max
,Clamp
- Parsing of
\sum
,\prod
,\int
. - Added parsing of log functions,
\lb
,\ln
,\ln_{10}
,\ln_2
, etc... - Added
expr.
subexpressions,
expr.getSubexpressions(),
expr.errors,
expr.symbols,
expr.isValid`. - Symbols can now be used to represent functions, i.e.
ce.box('Sin').domain
correctly returns["Domain", "Function"]
. - Correctly handle rational numbers with a numerator or denominator outside the range of a 64-bit float.
- Instead of a
Missing
symbol an["Error", "'missing'"]
expression is used. - Name binding is now done lazily
- Correctly handle MathJSON numbers with repeating decimals, e.g.
1.(3)
. - Correctly evaluate inverse functions, e.g.
ce.parse('\\sin^{-1}(.5)).N()
- Fixed some LaTeX serialization issues
Read more at Core Reference and [Arithmetic Reference] (https://cortexjs.io/compute-engine/reference/arithmetic/)
- #43 If the input of
ce.parse()
is an empty string, return an empty string forexpr.latex
orexpr.json.latex
: that is, ensure verbatim LaTeX round-tripping - Evaluating some functions, such as
\arccos
would result in a crash - Correctly handle parsing of multi-token decimal markers, e.g.
{,}
Release Date: 2022-04-18
- Parse more cases of tabular environments
- Handle simplify and evaluate of inert functions by default
- Avoid unnecessary wrapping of functions when serializing LaTeX
- Parse arguments of LaTeX commands (e.g.
\vec{}
) - #42 Export static
ComputeEngine.getLatexDictionary
- Parse multi-character constants and variables, e.g.
\mathit{speed}
and\mathrm{radius}
- Parse/serialize some LaTeX styling commands:
\displaystyle
,\tiny
and more
Release Date: 2022-04-05
- Correctly parse tabular content (for example in
\begin{pmatrix}...\end{pmatrix}
- Correctly parse LaTeX groups, i.e.
{...}
- Ensure constructible trigonometric values are canonical
- Correct and simplify evaluation loop for
simplify()
,evaluate()
andN()
. - #41 Preserve the parsed LaTeX verbatim for top-level expressions
- #40 Correctly calculate the synthetic LaTeX metadata for numbers
- Only require Node LTS (16.14.2)
- Improved documentation, including Dark Mode support
Release Date: 2022-03-27
- Added option to specify custom LaTeX dictionaries in
ComputeEngine
constructor expr.valueOf
returns rational numbers as[number, number]
when applicable- The non-ESM builds (
compute-engine.min.js
) now targets vintage JavaScript for improved compatibility with outdated toolchains (e.g. Webpack 4) and environments. The ESM build (compute-engine.min.esm.js
) targets evergreen JavaScript (currently ECMAScript 2020).
Release Date: 2022-03-21
The API has changed substantially between 0.4.2 and 0.4.3, however adapting code to the new API is very straightforward.
The two major changes are the introduction of the BoxedExpression
class and
the removal of top level functions.
The BoxedExpression
class is a immutable box (wrapper) that encapsulates a
MathJSON Expression
. It provides some member functions that can be used to
manipulate the expression, for example expr.simplify()
or expr.evaluate()
.
The boxed expresson itself is immutable. For example, calling expr.simplify()
will return a new, simplified, expression, without modifying expr
.
To create a "boxed" expression from a "raw" MathJSON expression, use ce.box()
.
To create a boxed expression from a LaTeX string, use ce.parse()
.
To access the "raw" MathJSON expression, use the expr.json
property. To
serialize the expression to LaTeX, use the expr.latex
property.
The top level functions such as parse()
and evaluate()
are now member
functions of the ComputeEngine
class or the BoxedExpression
class.
There are additional member functions to examine the content of a boxed
expression. For example, expr.symbol
will return null
if the expression is
not a MathJSON symbol, otherwise it will return the name of the symbol as a
string. Similarly, expr.ops
return the arguments (operands) of a function,
expr.asFloat
return null
if the expression does not have a numeric value
that can be represented by a float, a number
otherwise, etc...
Use expr.canonical
to obtain the canonical form of an expression rather than
the ce.format()
method.
The canonical form is less aggressive in its attempt to simplify than what was
performed by ce.format()
.
The canonical form still accounts for distributive and associative functions,
and will collapse some integer constants. However, in some cases it may be
necessary to invoke expr.simplify()
in order to get the same results as
ce.format(expr)
.
In addition to machine floating points, arbitrary precision numbers and complex numbers, the Compute Engine now also recognize and process rational numbers.
This is mostly an implementation detail, although you may see
["Rational", 3, 4]
, for example, in the value of a expr.json
property.
If you do not want rational numbers represented in the value of the .json
property, you can exclude the Rational
function from the serialization of JSON
(see below) in which case Divide
will be used instead.
Note also that internally (as a result of boxing), Divide
is represented as a
product of a power with a negative exponent. This makes some pattern detection
and simplifications easier. However, when the .json
property is accessed,
product of powers with a negative exponents are converted to a Divide
, unless
you have included Divide
as an excluded function for serialization.
Similarly, Subtract
is converted internally to Add
, but may be serialized
unless excluded.
Rather than using a separate instance of the LatexSyntax
class to customize
the parsing or serialization, use a ComputeEngine
instance and its
ce.parse()
method and the expr.latex
property.
Custom dictionaries (to parse/serialize custom LaTeX syntax) can be passed as an
argument to the ComputeEngine
constructor.
For more advanced customizations, use ce.latexOptions = {...}
. For example, to
change the formatting options of numbers, how the invisible operator is
interpreted, how unknown commands and symbols are interpreted, etc...
Note that there are also now options available for the "serialization" to
MathJSON, i.e. when the expr.json
property is used. It is possible to control
for example if metadata should be included, if shorthand forms are allowed, or
whether some functions should be avoided (Divide
, Sqrt
, Subtract
, etc...).
These options can be set using ce.jsonSerializationOptions = {...}
.
There are more options to compare two expressions.
Previously, match()
could be used to check if one expression matched another
as a pattern.
If match()
returned null
, the first expression could not be matched to the
second. If it returned an object literal, the two expressions matched.
The top-level match()
function is replaced by the expr.match()
method.
However, there are two other options that may offer better results:
expr.isSame(otherExpr)
return true ifexpr
andotherExpr
are structurally identical. Structural identity is closely related to the concept of pattern matching, that is["Add", 1, "x"]
and["Add", "x", 1]
are not the same, since the order of the arguments is different. It is useful for example to compare some input to an answer that is expected to have a specific form.expr.isEqual(otherExpr)
return true ifexpr
andotherExpr
are mathematically identical. For examplece.parse("1+1").isEqual(ce.parse("2"))
will return true. This is useful if the specific structure of the expression is not important.
It is also possible to evaluate a boolean expression with a relational operator,
such as Equal
:
console.log(ce.box(["Equal", expr, 2]).evaluate().symbol);
// -> "True"
console.log(expr.isEqual(ce.box(2)));
// -> true
Before | After |
---|---|
expr = ["Add", 1, 2] |
expr = ce.box(["Add", 1, 2]) |
expr = ce.evaluate(expr) |
expr = expr.evaluate() |
console.log(expr) |
console.log(expr.json) |
expr = new LatexSyntax().parse("x^2+1") |
expr = ce.parse("x^2+1") |
new LatexSyntax().serialize(expr) |
expr.latex |
ce.simplify(expr) |
expr.simplify() |
await ce.evaluate(expr) |
expr.evaluate() |
ce.N(expr) |
expr.N() |
ce.domain(expr) |
expr.domain |
ce.format(expr...) |
expr.canonical expr.simplify() |
Release Date: 2021-06-18
- In LaTeX, parse
\operatorname{foo}
as the MathJSON symbol"foo"
.