using matlab

Second Derivative Central: Write a user wr vector of x values and a vector of corresponding y-values. The function must return a matrix with 2 columns. The first column must contain x values. The second column must contain the centered difference approximations for the second derivative d'y/dx? at the given x values. In other words, the x values [x2, x3, , Xn-11 and corresponding second derivatives should be returned. If the x-spacing is not uniform, the function must return an error. 3. itten function that expects as its input argument a 4. Use the first derivative functions to estimato tho dldyo for cinlvl at v