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Use the Derivative Of f(x)=2x3+6xf ( x ) = 2 x ^ { 3 } + 6 x

Question 121

Multiple Choice

Use the derivative of f(x) =2x3+6xf ( x ) = 2 x ^ { 3 } + 6 x to determine any points on the graph of f(x) f ( x ) at which the tangent line is horizontal.


A) (1,8) ( 1,8 )
B) (1,8) ( 1,8 ) and (1,8) ( - 1 , - 8 )
C) f(x) f ( x ) has no points with a horizontal tangent line.
D) (2,28) ( 2,28 ) and (2,28) ( - 2,28 )
E) (0,0) ( 0,0 )

Correct Answer:

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