Test:42 QNo:2

find dy/dx at x=2, y=x²/(1+x²)

6 Answers

ans is 4/9 but i am getting 4/25 .plz solve this

106

Asish Mahapatra ·2009-04-29 01:51:22

y=x²/(1+x²)
So, dy/dx = [2x(1+x²) - 2x*x²]/(1+x²)²
= 2x/(1+x²)²
= 2*2/(1+4)²
= 4/25

that means that my ans is correct

yes aman you are correct ..

I will fix the mistake .. :)

plz solve H.C.Cerma Part II chp 29 exercise q. 22.(b) .i can't understand how the answer is 0

ans is not yet corrected

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