sherman81
sherman81
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x * cos(x)^2 f'(x) = x'cos(x)^2 + x(cos(x)^2)' f'(x) = cos(x)^2 + x(-2cos(x)sin(x)) f'(x) = cos(x)^2 - (2x)cos(x)sin(x) you can also shorten this to f'(x) = cos(x)^2 - xsin(2x)
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x * cos(x)^2 f'(x) = x'cos(x)^2 + x(cos(x)^2)' f'(x) = cos(x)^2 + x(-2cos(x)sin(x)) f'(x) = cos(x)^2 - (2x)cos(x)sin(x) you can also shorten this to f'(x) = cos(x)^2 - xsin(2x)
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x * cos(x)^2 f'(x) = x'cos(x)^2 + x(cos(x)^2)' f'(x) = cos(x)^2 + x(-2cos(x)sin(x)) f'(x) = cos(x)^2 - (2x)cos(x)sin(x) you can also shorten this to f'(x) = cos(x)^2 - xsin(2x)