find f'''(x) if f(x)=xsinx is it just simply f'''(x)=-xcosx
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no you need to use the product rule...if f and g are functions, then the derivative of Use that rule and try again
so f'(x)= sinx+xcosx f''(x)=cosx+(cosx-xsinx) f'''(x)=-sinx-sinx-cosx i dont think i did that right. can anyone help me. calc is kicking me hard
thank you very much.
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