1. If f(x) = cos2x, then the derivative, f'(x) = ? = = a) 2sinx b) -2 sin x cost c) 2cosx d) 2 cosx sinx
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1. If f(x) = cos2x, then the derivative, f'(x) = ? = = a) 2sinx b) -2 sin x cost c) 2cosx d) 2 cosx sinx
1. If f(x) = cos2x, then the derivative, f'(x) = ? = = a) 2sinx b) -2 sin x cost c) 2cosx d) 2 cosx sinx
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