If , find . f(x) = 4x + 2x^-1 f ' (x) = 4 - 2x^-2 = 4 - 2/x^2 can anybody tell me what im doing wrong?
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$\displaystyle y=4x+\frac{2}{x}$ then $\displaystyle y' = 4+2\cdot \left(\frac{1}{x} \right)'$ Now using the quotient rule $\displaystyle y'=4-2 \cdot \left(\frac{1}{x^2} \right)$ can now conclude
thank you my good sir
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