public void TestSecant()
{
Entity func = "sec(2x)";
var derived = func.Differentiate("x");
Assert.Equal(2 * MathS.Sec("2x") * MathS.Tan("2x"), derived.Simplify());
}
public void TestComplex()
{
var expr = MathS.FromString("ln(x) + sqrt(x) + tan(x) + sec(x) + cosec(x) + cotan(x)");
var expected = MathS.Ln(x) + MathS.Sqrt(x) +
MathS.Tan(x) + MathS.Sec(x) + MathS.Cosec(x) +
MathS.Cotan(x);
Assert.IsTrue(expr == expected);
}
[Fact] public void TestSec() => Assert.Equal(MathS.Sec("x"), FromString("sec(x)"));
[TestMethod] public void SecCosec() =>
TestSimplify(@"\frac{1}{\cos\left(\frac{1}{\sin\left(x\right)}\right)}", MathS.Sec(MathS.Cosec(x)));
[Fact] public void SecCosec() => TestSimplify(@"\sec\left(\csc\left(x\right)\right)", MathS.Sec(MathS.Cosec(x)));
