Use your own MATLAB codes to calculate an exponential of a square matrix A, i.e. e Task 1: Based on the following infinite series: 4" Compared to the regular function e* = 1+ - + 1! 2! e = + + 1! Write an MATLAB function to calculate an N-term approximation of eusing the first N-terms in the infinite series. (In the program you may either directly use the MATLAB operator of * i.e. C=A*B or use your own codes for matrix multiplication. The latter is encouraged as an excise for developing programming skills) Task 2: Write a function to calculate 4. - 14,1 117- i.e. the sum of absolute values of all entries (or elements) of the nX n square matrix A. The quantity can be used to assess convergence of an infinite series