CalculusMediumThe Derivative ShareThe Derivative · Medium problemLet g(x)=f(x)+9g(x) = f(x) + 9g(x)=f(x)+9 where f′(12)=21f'(12) = 21f′(12)=21. What is g′(12)g'(12)g′(12)?Check Show answer Walk through it step by step Practice more like this Review this concept