Question

y (производная)=2x/x+1 

Answer 1

y=2x/(x+1)

y'=((2x)'*(x+1) - 2x*(x+1)')/(x+1)^2 = (2(x+1)-2x*1)/(x+1)^2= 2/(x+1)^2

 

 

Answer 2

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