Question

we have a sentence that says the following, and if so what is it called so?
"A function which is continuous in the interval [a, b​​], and f (a) <0 and f (b)> 0, f '(x)> 0, then there must be a point c satisfying f(c) = 0 "

Answer 1

That's the Intermediate Value Theorem.

Answer 2

Thanks man!