Question

Производная y=-1/10x^2

Answer 1

$y=-frac{1}{10x^2}=-0.1x^{-2}$
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$y'=(-0.1x^{-2})'=-0.1*(x^{-2})'=\\-0.1*(-2)x^{-2-1}=0.2x^{-3}=\\frac{2}{10x^3}=frac{1}{5x^3}$