public void TestCosSin() { var x = VF("x"); AreEqual("((2*(-1*(M.SinDeg(Null,x)*57.29578)))*M.Cos(Null,(2*M.CosDeg(Null,x))))", DerivDebug(x, Sin(E2.Mul(CosDeg(x))))); AreEqual("(2*M.Sin(Null,((x*-2)+3)))", DerivDebug(x, E2.Add(Cos(x.Mul(ExC(-2f)).Add(ExC(3f)))))); }