If a function is continuous on the interval [a, b], what does the Mean Value Theorem for Integrals guarantee?
The function has a maximum at x = a.
There exists a number c in [a, b] such that the integral is zero.
There exists a number c in [a, b] such that the area under the curve equals the area of a rectangle with height f(c).
The function is differentiable on (a, b).