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Virtual Math Learning Center

Virtual Math Learning Center Texas A&M University Virtual Math Learning Center

Increasing and Decreasing and Local Extrema

Author: ShaNisaa RaSun

The following problem is solved in this video. It is recommended that you try to solve the problem before watching the video. You can click "Answer" to reveal the answer to the problem.

Problem: For the following function, find the critical values of the function, the intervals where the function is increasing/decreasing, and the local extrema of the function as well as where they occur.\[f(x)= x^3-6x^2+9x+2\]

Critical Values: \(x=1,3\)
\(f\) is increasing on \((-\infty,1)\) and \((3,\infty).\)
\(f\) is decreasing on \((1,3).\)
Local Maximum of 6 at \(x=1.\) 
Local Minimum of 2 at \(x=3.\)

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