1.

यदि ` y= sec tan ^(-1) x,` तब ` (dy)/(dx) =`A. ` x//(1+x^(2))`B. ` xsqrt((1+x^(2)))`C. ` 1//sqrt(1+x^(2))`D. ` x//(1+x^(2))`

Answer» Correct Answer - D


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