Find the value of (f o g)' at the given value of x. f(u) = u5 + 1 u = g(x) = sqrt(x) x = 1 Ok so the section is based on the chain rule and came right out of my calculus book. I seem to be doing the problem right, i check my attempt over a few times and cannot seem to find the problem (the answer in the book is different from my answer). Here's my attempt: f(g(x)) = (sqrt(x))5 + 1 d/dx ((sqrt(x))5) + 1 = (5(sqrt(x)))4 Ok the problem is with the derivative of the function. When my book does the problem they get 5/2 but don't explain the procedure. Anyone care to explain, please?