For each function and graph in Problems below (a) Use the graph to identify x values for which y ' Euml 0, y ' Euml 0, y ' 0, and y ' does not exist (b) Use the derivative to check your conclusions 1 y 6 x x2 2 y 1 2x2 4x 1 3 y 6 x3 1 15 x5 4 y x 4 2x2 1 2 2 4 4 2 4 6 8 10 12 14 6 8 10

Question: For each function and graph in Problems below (a) Use the graph to identify x-values for which y' Ë 0, y'Ë 0, y'=0, and y'

For each function and graph in Problems below
(a) Use the graph to identify x-values for which y' Ëƒ 0, y'Ë‚ 0, y'=0, and y' does not exist.
(b) Use the derivative to check your conclusions.
1. y = 6 - x - x2

2. y = 1/2x2 - 4x + 1

3. y = 6 + x3 - 1/15 x5

4. y = x 4 - 2x2 -1

2 -2- 4 -4 2 4 6 /8 10 12 14 -6 -8 -10

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