6. Consider the function f(x)= 2x3 - 6x2 – 18x+22. Use the Second Derivative Test to find the relative extrema, if any, of the function. (Give your answers as ordered pairs.) f' (2) = 6x2 - 12x -18 f'(x)=0

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Chapter1: Functions And Models
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6. Consider the function f(x)= 2x° –6x² – 18x+22. Use the Second Derivative Test to find the relative
extrema, if any, of the function. (Give your answers as ordered pairs.)
f' (2) = 6x2 - 12x -18
f'(2): 0
( 3x +3)(2x-6) - o
3x +3 =0
dx -6-0
I= -1
3
fr (x) = 12x -12
f" (-) = -12- 12= -24
rmax
at x= - 24
1"(3)
36 - 12
24 sSo
rmin
at gH= 24
=
ニ
t(- 24) = 2(-24)3 -6( -24)2 -18(-24) + 22 = - 27338
f (24) = = 27094
2C 24)% - 6C 24)² - 18 (24)+ 22
(-24, -
Relative minimum(s): 24, 27094)
27338)
Relative maximum(s):
Transcribed Image Text:6. Consider the function f(x)= 2x° –6x² – 18x+22. Use the Second Derivative Test to find the relative extrema, if any, of the function. (Give your answers as ordered pairs.) f' (2) = 6x2 - 12x -18 f'(2): 0 ( 3x +3)(2x-6) - o 3x +3 =0 dx -6-0 I= -1 3 fr (x) = 12x -12 f" (-) = -12- 12= -24 rmax at x= - 24 1"(3) 36 - 12 24 sSo rmin at gH= 24 = ニ t(- 24) = 2(-24)3 -6( -24)2 -18(-24) + 22 = - 27338 f (24) = = 27094 2C 24)% - 6C 24)² - 18 (24)+ 22 (-24, - Relative minimum(s): 24, 27094) 27338) Relative maximum(s):
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