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Activity 3.5.3

Avg difficulty 2.5

Find the exact absolute maximum and minimum of each function on the stated interval.

  1. h(x)=xe−xh(x) = xe^{-x}, [0,3][0,3]

  2. p(t)=sin⁡(t)+cos⁡(t)p(t) = \sin(t) + \cos(t), [−π2,π2][-\frac{\pi}{2}, \frac{\pi}{2}]

  3. q(x)=x2x−2q(x) = \frac{x^2}{x-2}, [3,7][3,7]

  4. f(x)=4−e−(x−2)2f(x) = 4 - e^{-(x-2)^2}, (−∞,∞)(-\infty, \infty)

  5. h(x)=xe−axh(x) = xe^{-ax}, [0,2a][0, \frac{2}{a}] (a>0a \gt 0)

  6. f(x)=b−e−(x−a)2f(x) = b - e^{-(x-a)^2}, (−∞,∞)(-\infty, \infty), a,b>0a, b \gt 0

Boelkins, Active Calculus, §3.5 Global optimization, Activity 3.5.3

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Adapted from Active Calculus © 2012–2025 Matthew Boelkins. Licensed under CC BY-SA 4.0. Source: Active Calculus. Imported at revision dc86ba3.