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यदि (If) y=sec (tan^(-1)x)" हो, तो "(then)(dy)/(dx)=`A. `(x)/sqrt(1+x^(2))`B. `-(x)/sqrt(1+x^(2))`C. `-(x)/sqrt(1-x^(2))`D. इनमें से कोई नहीं | |
| Answer» Correct Answer - C | |