For some reason I am struggling with these problems. I am lost as a goose trying to fly south for the winter! 1. The problem statement, all variables and given/known data 9^(5-x2) and another derivative problem using chain rule r/square root of the whole term r^2+5 2. Relevant equations 1st equation= d/dx= a^x ln a 2nd equation= 3. The attempt at a solution 1st one= -9^(5-x^2) 2x log (9) 2nd one= i am stuck at square root of (r^2 +5) + square rt (r^2+5) -r^2 all divided by sq root of (r^2+5) all divided by (r^2 +5)^2 any help would be greatly appreciated!!!