1.

The solution of (dy)/(dx) + ((y^(2) + y + 1)/(x^(2) + x+1)) = 0 is

Answer»

`Tan^(-1)((2x+1)/(sqrt(3))) + Tan^(-1)((2Y+1)/(sqrt(3))) = C`
`Tan^(-1)((2x-1)/(sqrt(3))) + Tan^(-1)((2y-1)/(sqrt(3))) = c`
`Tan^(-1)(2x+1) + Tan^(-1)(2y+1) = c`
`Tan^(-1)((2x)/(sqrt(3)))(2x) + Tan^(-1)((2y)/(sqrt(3))) = c`

Answer :A


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