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Asked Oct 22, 2019
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2 f(x)8-(9+7x) Set first derivative to 0 and find the critical points f(x)=(9+7ax)(7) (9+7x) (7) = 2(9+7x)

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2(9+7x)7=0 (9+7x)7=0 9+7x 0 9 7 As the domain of f(x)=8-(9+7x)7 is (-0,o) the critical point, x=-- lies in the domain

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