- #1

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y = 6u^2-11 first, then substitute u with 3x^2 +2.

or if i substitute u with 3x^2 +2, then expand/simplify, then derivate the entire question.

i got two answers.

using the first method f'(2) = 2016

and the second method f'(2) = 144

which method is right?

or am i just completely wrong.