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integral for ln() and lg()

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Sergey Solovyev
2012-01-09 21:12:10 +04:00
parent 4af3f35438
commit ea83e67a96
1 changed files with 7 additions and 0 deletions
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7
src/test/java/org/solovyev/android/calculator/model/CalculatorEngineTest.java
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@@ -252,6 +252,13 @@ public class CalculatorEngineTest {
CalculatorEngine.instance.getVarsRegistry().add(new Var.Builder("t", "2")); CalculatorEngine.instance.getVarsRegistry().add(new Var.Builder("t", "2"));
Assert.assertEquals("2t", cm.evaluate(JsclOperation.simplify, "∂(t^2,t)").getResult()); Assert.assertEquals("2t", cm.evaluate(JsclOperation.simplify, "∂(t^2,t)").getResult());
Assert.assertEquals("4", cm.evaluate(JsclOperation.numeric, "∂(t^2,t)").getResult()); Assert.assertEquals("4", cm.evaluate(JsclOperation.numeric, "∂(t^2,t)").getResult());
Assert.assertEquals("-x+x*ln(x)", cm.getEngine().simplify("∫(ln(x), x)"));
Assert.assertEquals("-(x-x*ln(x))/(ln(2)+ln(5))", cm.getEngine().simplify("∫(log(10, x), x)"));
Assert.assertEquals("∫((ln(2)+ln(5))/ln(x), x)", cm.getEngine().simplify("∫(ln(10)/ln(x), x)"));
Assert.assertEquals("∫(ln(10)/ln(x), x)", Expression.valueOf("∫(log(x, 10), x)").expand().toString());
Assert.assertEquals("∫((ln(2)+ln(5))/ln(x), x)", cm.getEngine().simplify("∫(log(x, 10), x)"));
} }
@Test @Test