1.

यदि (If) `y="tan"^(-1)(2x)/(1-x^(2))` जहाँ (where) `|x|lt1,` (find) `(dy)/(dx)` ज्ञात करें ।

Answer» यहाँ `y="tan"^(-1)(2x)/(1-x^(2))=2tan^(-1)x therefore(dy)/(dx)=(2)/(1+x^(2))`


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