मराठी

The general solution of ddedydx=2xex2-y is ______. - Mathematics

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प्रश्न

The general solution of `("d"y)/("d"x) = 2x"e"^(x^2 - y)` is ______.

पर्याय

  • `"e"^(x^2 - y)` = c

  • `"e"^-y + "e"^(x^2)` = c

  • `"e"^-y = "e"^(x^2)` + c

  • `"e"^(x^2 + y)` = c

MCQ
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उत्तर

The general solution of `("d"y)/("d"x) = 2x"e"^(x^2 - y)` is `"e"^-y = "e"^(x^2)` + c.

Explanation:

The given differential equation is `("d"y)/("d"x) = 2x"e"^(x^2 - y)`

⇒ `("d"y)/("d"x) = 2x . "e"^(x^2) . "e"^-y`

⇒ `("d"y)/("e"^-y) = 2x . "e"^(x^2)  "d"x`

Integrating both sides, we have

`int ("d"y)/("e"^-y) = int 2x . "e"^(x^2)  "d"x`

⇒ `int "e"^y  "d"y = int 2x . "e"^(x^2)  "d"x`

Pit in R.H.S. x2 = t

∴ 2x dx = dt

∴ `int "e"^y  "d"y = int "e"^"t"  "dt"`

⇒ ey = et + c

⇒ ey = `"e"^(y^2) + "c"`

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पाठ 9: Differential Equations - Exercise [पृष्ठ १९९]

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एनसीईआरटी एक्झांप्लर Mathematics [English] Class 12
पाठ 9 Differential Equations
Exercise | Q 61 | पृष्ठ १९९

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