For 2126, show that a critical point occurs at x = 2, and use the second derivative test
Chapter 8, Problem 21(choose chapter or problem)
For 2126, show that a critical point occurs at x = 2, and use the second derivative test to determine algebraically whether this critical point is a relative maximum or a relative minimum. If the test fails, use the sign of the first derivative to decide. Plot the graph and sketch it in a neighborhood of x = 2, thus confirming your conclusion.f(x) = 3ex xex
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