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The function f(x)=4x^(3)+ax^(2)+bx+2 ha...

The function `f(x)=4x^(3)+ax^(2)+bx+2` has an extremum at (2,-2) , find the values of a and b . Show that , the function possesses a minimum value at the extreme point.

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The correct Answer is:
a=-15 and b =12
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