Intermediate Value Theorem
if f(x) is continuous on [a,b], then there will be a point x=c that lies in between [a,b] such that f(c) is between f(a) and f(b)
The Intermediate Value Theorem is a fundamental concept in calculus that characterizes a continuous function. The theorem states that if a function f(x) is continuous on the closed interval [a, b], and if k is any number between f(a) and f(b), then there exists at least one number c between a and b such that f(c) = k.
In simpler terms, the Intermediate Value Theorem states that if you have a continuous curve that starts at point A (f(a)) and ends at point B (f(b)), and you pick any point C between the two, then there must be at least one point on the curve that passes through C.
This theorem is useful in many applications, particularly in finding roots of equations or zeroes of functions. For example, if you have a function that switches from positive to negative between two points, then the Intermediate Value Theorem tells us that there must be at least one zero in the interval between the two points.
Understanding the Intermediate Value Theorem is crucial in calculus, as it provides a way to prove the existence of certain types of solutions to mathematical problems.
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