Question
Find the general solution of differential equation $2 x y d y=\left(x^2+y^2\right) d x$
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$\int\tan^{-1}\Big(\frac{2\text{x}}{1-\text{x}^2}\Big)\text{dx}$
| Plant | A | B | C |
| I | 50 | 100 | 100 |
| II | 60 | 60 | 200 |