Question: a. Show that f(x) = 8x 2 12 + Ax 2 + Bx 4 , where A and B are constants to be found.

a. Show that f′(x) = 8x−2 − 12 + Ax2 + Bx4, where A and B are constants to be found.


b. Find f″(x). Given that the point (−2, 9) lies on the curve with equation y = f(x),


c. Find f(x).


f'(x) = (2-x) x2 , X = 0

f'(x) = (2-x) x2 , X = 0

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