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Let f(r) = x' -x² - 18x. Find the following: a) All critical points of f. b) Open intervals where fis increasing. c) Open intervals where fis decreasing.

Let f(r) = x' -x² - 18x. Find the following: a) All critical points of f. b) Open intervals where fis increasing. c) Open intervals where fis decreasing.

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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5. ELet (x) = x' - - 18r. Find the following: 3x² - 18x. Find the following: a) All critical points of f. b) Open intervals where fis increasing. c) Open intervals where fis decreasing. d) X-coordinates of local Maxima of f. e) X-coordinates of local minima of f.
Transcribed Image Text:5. ELet (x) = x' - - 18r. Find the following: 3x² - 18x. Find the following: a) All critical points of f. b) Open intervals where fis increasing. c) Open intervals where fis decreasing. d) X-coordinates of local Maxima of f. e) X-coordinates of local minima of f.
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