Compute the first and second derivatives of the functions: #6-7 V= x +4x - 15 at x = 0 #8-9 y = x cos X at x = 0.4, #10-11 y= tan(x/3) at x = 3 #12-13 y= sin(0.5 /x)/x at x = 1 #14-15 y=e+x at x = 2