Ihave two very similar questions about finding second derivatives and the answers that i've gotten through my work seem quite different from the a-d answers given. i think i'm doing something wrong but i'm not sure what. find the second derivative of f(n) = 2/n^2. a. 2n^-2 b. -4n^-3 c. -4n^-1 d. 2n^-3 i got the answer of 12/n^4. find the second derivative of g(n) = 1/(3n^3). a. -9n^-4 b. -(1/9) * n^-4 c. -n^-4 d. (1/9) * n^-2 i got the answer of 4/n^5.