Note : A matrix exponential is defined by the same Taylor series as the usual exponential function, but one allows square matrices as inputs instead of just numbers.

Need help creating a python function matrix_et(M) which computes the matrix exponential of M using the first 20 terms of the (familiar) series, and it also have to use within the matrix_p(M,e) that takes as input a square matrix M and a natural number e. The output should be the result of matrix multiplication, with M multiplied by itself e times. When e is zero, the function should output the identity matrix np.eye(s) where s is the number of rows (or columns) of M.

(PYTHON)