1.

The solution of (dy)/(dx) + (2x)/(1 + x^(2)) y = (1)/((1 + x^(2))^(2)), is

Answer»

`y(1+X^(2)) = Tan^(-1)x-(pi)/(4)`
`y(1-x^(2)) = Tan^(-1)x-(pi)//(4)`
`y(1+x^(2)) = Tan^(-1)x+(pi)/(4)`
`x(1+x^(2)) = Tan^(-1)x-pi//4`

ANSWER :A


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