Calculating symbolic derivatives

Calculation of the derivative is useful, among others, during the test of a function and determining its extremes.

Supported functions and mathematical operations, among others:

- Addition, subtraction, multiplication, division

- Intensification and roots

- Natural logarithm

- Trigonometric functions sine (sin), cosine (cos), tangent (tan), secant (sec) cosecant (CSC) cotangent (cot)