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Solve the differential equation dydx=ex+y+x2ey.

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Question

Solve the differential equation \[\frac{dy}{dx} = e^{x + y} + x^2 e^y\].
Sum
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Solution

`("d"y)/("d"x)` = e(x+y) + x2ey 

∴ `("d"y)/("d"x)` = ex . ey + x2 ey

∴ `("d"y)/("d"x)` = ey(ex + x2)

∴ `("d"y)/("e"^y)` = (ex + x2) dx

Integrating on both sides, we get

`int_"e"^(-y) "d"y = int("e"^x + x^2)  "d"x`

∴ `("e"^(-y))/(-1) = "e"^x + x^3/3 + "c"_1`

∴ e−y = `- "e"^x - x^3/3 - "c"_1`

∴ `"e"^(-y) + "e"^x + x^3/3` = c, where c = c1 

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Chapter 2.6: Differential Equations - Attempt the following questions I

APPEARS IN

SCERT Maharashtra Mathematics and Statistics (Arts and Science) [English] Standard 12 Maharashtra State Board
Chapter 2.6 Differential Equations
Attempt the following questions I | Q 3
R.D. Sharma Mathematics Volume 1 and 2 [English] Class 12
Chapter 21 Differential Equations
Exercise 22.07 | Q 8 | Page 55

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