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Differentiation (p-1) — Maths (commerce) STD 11 Commerce / Arts — Question

Maharashtra BoardEnglish MediumSTD 11 Commerce / ArtsMaths (commerce)Differentiation (p-1)1 Mark
Question
Differentiate the following functions w.r.t.x. : $x^{-2}$
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Answer

Let $y=x^{-2}$
Differentiating w.r.t. $x$, we get
$
\frac{\mathrm{d} y}{\mathrm{~d} x}=\frac{\mathrm{d}}{\mathrm{d} x}\left(x^{-2}\right)=-2 x^{-3}=\frac{-2}{x^3}
$

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