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| 1. |
यदि `x=(1-t^(2))/(1+t^(2))andy=(2t)/(1+t^(2))` तो `(dy)/(dx)` =A. `-(y)/(x)`B. `(y)/(x)`C. `-(x)/(y)`D. `(x)/(y)` |
| Answer» Correct Answer - C | |