# If the derivative of $$F(x)$$ is $$f(x)$$, is it true that $$\int _a^b f(x) \, dx = F(b) -F(a)$$?
Cite as: If the derivative of $$F(x)$$ is $$f(x)$$, is it true that $$\int _a^b f(x) \, dx = F(b) -F(a)$$?. Brilliant.org. Retrieved from https://brilliant.org/wiki/if-the-derivative-of-fx-is-fx-is-it-true-that-int/