## Intermediate Value Theorem

### Used to estimate the derivative(F(x+h)-f(x))/h

The Intermediate Value Theorem is a theorem in calculus that states that if a function is continuous on a closed interval, then it must take on every value between the function’s values at the endpoints of the interval at some point within the interval. In simpler terms, the theorem says that if a curve crosses an interval in the y-direction, without any breaks or gaps, the curve must pass through every intermediate value of y between the values of y it takes at the endpoints of the interval.

There are a couple of important things to note about the Intermediate Value Theorem:

– It only works for continuous functions (functions without any jumps or breaks) on closed intervals (intervals that include their endpoints).

– The theorem does not tell you what the exact intermediate value is, only that it exists somewhere within the interval.

– The theorem can be used to prove that a solution to an equation (such as f(x) = 0) exists between two initial guesses.

Overall, the Intermediate Value Theorem is a useful tool for understanding and analyzing continuous functions on closed intervals. It allows us to make predictions about a function’s behavior without having to rely on complex mathematical analysis or computational methods.

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