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Find the derivative of f(x) f(x) .\newlinef(x)=cos⁡(x) f(x) = \cos(x) \newlinef′(x)= f'(x) = ______

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Q. Find the derivative of f(x) f(x) .\newlinef(x)=cos⁡(x) f(x) = \cos(x) \newlinef′(x)= f'(x) = ______
  1. Use derivative rule: To find the derivative of f(x)=cos⁡(x)f(x) = \cos(x), we use the fact that the derivative of cos⁡(x)\cos(x) with respect to xx is −sin⁡(x)-\sin(x).
  2. Apply derivative formula: So, f′(x)=−sin⁡(x)f'(x) = -\sin(x).

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