Can someone please give me the full detailed solutions for both problems? The questions are to find the derivative functions of these functions (using the quotient rule).

Problem 1:

y = (r^2)/(1 + sqrt(r))

Problem 2:

f(x) = x/(c + c/x)

Answer (1):y' = r(4 + 3sqrt(r))/2(1 + sqrt(r))^2

Answer (2):y' = 2cx/(x^2 + c)^2

Any help would be greatly appreciated!

Thanks in advance!