test for NCalc issue 97

- tranleduy2000/ncalc#79
axkr · Feb 25, 2020 · 20ccc13 · 20ccc13
1 parent 00654cf
commit 20ccc13
Showing 1 changed file with 17 additions and 0 deletions.
diff --git a/...library/matheclipse-core/src/test/java/org/matheclipse/core/system/LowercaseTestCase.java b/...library/matheclipse-core/src/test/java/org/matheclipse/core/system/LowercaseTestCase.java
@@ -19711,6 +19711,23 @@ public void testSolve() {
 		// check("Solve(x^3 == 1 - I, x)", //
 		// "{{x->-(-1+I)^(1/3)},{x->(-1+I)^(1/3)},{x->-(-1)^(2/3)*(-1+I)^(1/3)}}");
 
+		// https://github.com/tranleduy2000/ncalc/issues/79
+		// 0x + 50y + 2z = 20
+		// -6x - 12y + 20z = 8
+		// 6x + 62y - 18z = 12
+		check("Solve({50*y+2*z==20, -6*x-12*y+20*z==8, 6*x+62*y-18*z==12},{x,y,z})", //
+				"{{x->1/75*(-160+256*z),y->1/25*(10-z)}}");
+		check("Solve({50*y+2*z==20, -6*x-12*y+20*z==8, 6*x+62*y-18*z==12},{x,y,z}) // N", //
+				"{{x->0.0133333*(-160.0+256.0*z),y->0.04*(10.0-z)}}");
+
+		// 0x + 50y + 2z = 20
+		// -6x - 12y + 20z = 8
+		// 6x + 62y - 18z = 13
+		check("Solve({50*y+2*z==20, -6*x-12*y+20*z==8, 6*x+62*y-18*z==13},{x,y,z})", //
+				"{}");
+		check("Solve({50*y+2*z==20, -6*x-12*y+20*z==8, 6*x+62*y-18*z==13},{x,y,z}) // N", //
+				"{}");
+
 		check("-(-I*Pi-f(a))/b", //
 				"(I*Pi+f(a))/b");
 		check("Solve(3*x^x==7,x)", //