Let ƒ be the function given by f (x) = e ^ (x / 2) (a) Write the first four nonzero terms and the general term for the Taylor series expansion of ƒ(x) about x = 0. (b) Use the result from part (a) to write the first three nonzero terms and the general term of the series expansion about x = 0 for g (x) = ((e^(x / 2)) – 1)/x For part a I got P4 = 1 + x/2 + ((x/2)^2)/2! + ((x/2)^3)/3! E ((x/2)^n)/n! E = summation sign n=0 to infinity For part b I got, which was marked wrong, x-1 + ((x/2)2 – 1)/(2!x) + ((x/2)3 – 1)/(3!x) E ((x/2)n - 1)/(n!x) On my paper my teacher marked only –1 once and I am not for sure what that means. Any help on part B would be greatly appreciated.