- Question 1 1 point How Did I Do? Let g be a differentiable function that satisfies cos(g(a)) + 2 sin(g(ac)) = a + (255/4)a near x = -4. Use implicit differentiation to find an expression for the derivative g (a ) in term of g(). Then, given that g(-4) = (4) 7, find the exact value of g (-4). g' ( - 4) =