Let x $=[3,2,6,8]\text{'}$ and y $=[4,1,3,5]\text{'}$

Write Matlab commands that perform the following tasks

$($NB$.$ x and y should be column vectors$).$

a$.$ Add the sum of the elements in x to y $($use the sum function$).$

b$.$ Raise each element of x to the power specified by the corresponding element in y$.$