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Find the general solution of dydx=1+y21+x2 - Mathematics and Statistics

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प्रश्न

Find the general solution of `("d"y)/("d"x) = (1 + y^2)/(1 + x^2)`

योग
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उत्तर

`("d"y)/("d"x) = (1 + y^2)/(1 + x^2)`

∴ `("d"x)/(1 + x^2) - ("d"y)/(1 + y^2)` = 0

Integrating on both sides, we get

`int ("d"x)/(1 +  x^2) - int ("d"y)/(1 + y^2)` = 0

∴ tan–1x – tan–1y = c

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Formation of Differential Equations
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