I want to simplify the following expression using sympy:

So I need to make take some derivatives first and later in the code (when the explicit form of f(x) is given) substitute the Derivative(f(x), x) with the explicit form of the derivative

In the sympy documentation about quatenions https://docs.sympy.org/latest/modules/algebras.html#sympy.algebras.Quaternion the quatenion constructor is defined as:

When I output the value of the variable expr, I get

SymPy understands that Sum and + commute.

Consider taking the (symbolic) derivative of sum of a function applied to each element of a data set. The conceptual code would be something like:

I use the following code to symbolically triple integrate a function f(t1,t2,m) , but it gives an error :

This is my code

I have SymPy expressions as sinh(x) + sinh(y) and I would like to express them as the product
2 sinh((x + y) / 2) cosh((x - y) / 2).

I’m using SymPy to calculate an integral involving trigonometric functions and parameters, but it returns the integral in its unevaluated form.