Q5. (4 pts) Let 04 be a constant and consider the numerical method yk+1 = Me + hf(yk + ahykll used to obtain approximate solutions to the differential equation @_ dt f (y) with 9(0) = 3/0 (a) (3 pts) Derive an expansion for the leading term of the local truncation error. (b) (1 pt) For What values of or is the numerical method globally second order