Let f,g be differentiable on R and suppose that f(0)=g(0) and (x)≤g; (x) for all x≥0. Show that f(x)≤g(x) for all x≥0.
A. Use the Mean Value Theorem.
B. Apply Rolle's Theorem.
C. Utilize the Chain Rule.
D. Calculate the definite integral of f.