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"If "xy+y^(2)=tan x + y," then find "(dy...

`"If "xy+y^(2)=tan x + y," then find "(dy)/(dx).`

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`xy + y^(2) = tan x + y `
Differentiate both sides w.r.t. x
`(x(dy)/(dx)+y.1)+ 2y(dy)/(dx)= sec^(2)x + (dy)/(dx)`
`rArr (dy)/(dx) (x + 2y - 1)=sec^(2)x - y`
`rArr (dy)/(dx) =(sec^(2) x - y)/(x + 2y-1)`
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