हिंदी

Find the general solution of the differential equation: log(dydx)=ax+by.

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प्रश्न

Find the general solution of the differential equation:

`log((dy)/(dx)) = ax + by`.

योग
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उत्तर

Given differential equation is `log((dy)/(dx)) = ax + by`

⇒ `(dy)/(dx) = e^(ax  +  by)`

⇒ `(dy)/(dx) = e^(ax).e^(by)`

⇒ `(dy)/(e^(by)) = e^(ax) dx`

⇒ `e^(-by) dy = e^(ax) dx`

On integrating both sides, we get

`inte^(-by)dy = inte^(ax)dx`

`e^(-by)/(-b) = e^(ax)/a + C`

⇒ `e^(ax)/a - e^(-by)/b + C` = 0

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2021-2022 (March) Term 2 - Outside Delhi Set 2

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