public void AddDerivativeTest3() { // 2x + 3 var num1 = new Number(2); var x = new Variable("x"); var mul1 = new Mul(num1, x); var num2 = new Number(3); var exp = new Add(mul1, num2); var deriv = Differentiate(exp); Assert.Equal("2 * 1", deriv.ToString()); num1.Value = 5; Assert.Equal("(5 * x) + 3", exp.ToString()); Assert.Equal("2 * 1", deriv.ToString()); }
public void BinaryToStringTest() { var exp = new Add(new ComplexNumber(3, 2), new ComplexNumber(3, 2)); Assert.Equal("3+2i + 3+2i", exp.ToString()); }
public void DerivativeTest3() { // 2x + 3 Number num1 = new Number(2); Variable x = new Variable("x"); Mul mul1 = new Mul(num1, x); Number num2 = new Number(3); IExpression exp = new Add(mul1, num2); IExpression deriv = exp.Differentiate(); Assert.AreEqual("2 * 1", deriv.ToString()); num1.Value = 5; Assert.AreEqual("(5 * x) + 3", exp.ToString()); Assert.AreEqual("2 * 1", deriv.ToString()); }