Question: Please help I need this now. I will provide feedback. Positive feedback. 17 1 point Let f (a) = cos(a' ). Select the correct derivative.

Please help I need this now. I will provide feedback. Positive feedback.

17 1 point Let f (a) = cos(a' ). Select the correct derivative. O f'(x) = - cos(13) . 3x2 O f'(x) = - sin(x3) . 3x2 OO O f'(x) - cos(3) . 3x2 O f'(z) - sin(x3) . 3x2
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