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If =cos^2[tan^(-1)(sincot^(-1)x)], then ...

If `=cos^2[tan^(-1)(sincot^(-1)x)],` then `(dy)/(dx)` is `(-2x)/((x^2+2)^2)` (b) `(2x)/((x^2+2)^2)` `2/((x^2+2)^2)` (d) `(-2)/((x^2+2)^2)`

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