GATE (TF) Textile 2017 Question Paper Solution | GATE/2017/TF/03

Question 03 (Textile Engineering & Fibre Science)

If $z(x,y)=x^2-y^2$ , $x(t)=t-t^2$ and $y(t)=t^2+t^{-3}$ then $\frac{dz}{dt}$ at $t=1$ is equal to __3.99 to 4.01__

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