User:Shoaib Meenai

$$f'(c) = \frac{f(b) - f(a)}{b - a}$$

$$\int f'(c) dx = \int \frac{f(b) - f(a)}{b - a} dx$$

$$f(c) = \frac{F(b) - F(a)}{b - a}$$ where F is an antiderivative of f

$$f(c) = \frac{\int_a^b f(x) dx}{b - a}$$ by the FTC