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| 1. |
Ify=cos^-1((2x)/(1+x^2)),-1ltxlt1, Find (dy)/(dx) |
| Answer» SOLUTION :`y=cos^-1((2X)/(1+x^2))=pi/2-sin^-1((2x)/(1+x^2))=pi/2-2tan^-1xtherefore(DY)/(DX)=0-2/(1+x^2)=(-2)/(1+x^2)cos^-1x=pi/2-sin^-1x` | |