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20 баллов~
[tex] \frac{1- x^{2} -2 x}{( x^{2} +1)^{2} } [/tex]
20 баллов~
[tex] \frac{1- x^{2} -2 x}{( x^{2} +1)^{2} } [/tex]
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Answers & Comments
б)(x^-12)' = -12x^-13
в) x^4/5 = 4/5x^-1/5
г) (-4 + x lg2)' = lg2