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The integrating factor of the differential equation dydxdydx(xlogx)+y = 2logx is ______.

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Question

The integrating factor of the differential equation `"dy"/"dx" (x log x) + y` = 2logx is ______.

Options

  • ex 

  • log x

  • log (log x)

  • x

MCQ
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Solution

The integrating factor of the differential equation `"dy"/"dx" (x log x) + y` = 2logx is log x.

Explanation:

Given equation can be written as `"dy"/"dx" + y/(xlogx) = 2/x`.

Therefore, I.F. = `"e"^(int 1/(xlogx)  "d"x)`

= `"e"^(log (logx))`

= log x.

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Chapter 9: Differential Equations - Solved Examples [Page 188]

APPEARS IN

NCERT Exemplar Mathematics Exemplar [English] Class 12
Chapter 9 Differential Equations
Solved Examples | Q 17 | Page 188

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