A derivative test is a mathematical test that uses derivatives of a function to locate and classify the nature of the critical points of the function. The best-known examples are the first and second derivative tests.
Derivative Test
See also
First Derivative Test, Second Derivative TestExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Derivative Test." From MathWorld--A Wolfram Web Resource. https://mathworld.wolfram.com/DerivativeTest.html