public void RootDerivativeTest2()
{
// root(x, 3)
var num = new Number(3);
var x = new Variable("x");
var exp = new Root(x, num);
var deriv = Differentiate(exp);
Assert.Equal("1 * (1 / 3) * (x ^ ((1 / 3) - 1))", deriv.ToString());
num.Value = 4;
Assert.Equal("root(x, 4)", exp.ToString());
Assert.Equal("1 * (1 / 3) * (x ^ ((1 / 3) - 1))", deriv.ToString());
}
public void RootDerivativeTest2()
{
// root(x, 3)
Number num = new Number(3);
Variable x = new Variable("x");
IExpression exp = new Root(x, num);
IExpression deriv = Differentiate(exp);
Assert.AreEqual("1 * ((1 / 3) * (x ^ ((1 / 3) - 1)))", deriv.ToString());
num.Value = 4;
Assert.AreEqual("root(x, 4)", exp.ToString());
Assert.AreEqual("1 * ((1 / 3) * (x ^ ((1 / 3) - 1)))", deriv.ToString());
}