Find the general solution dy + cos(x)y = cos(x) dx O y = 1+ ke-2 sin(x) O y² = 2 sin(x) + c y = e-sin(x) + cos(x) esin(x) + c O ○ y = sin(x) + ke¯sin(x)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Question
Find the general solution
dy + cos(x) y = cos(x)
dx
○ y = 1+ ke-2 sin(x)
Oy²
y²
= 2 sin(x) + c
y=e=sin(x) +
cos(x)
esin(x)
+ c
Oy=sin(x) + ke¯ sin(x)
Transcribed Image Text:Find the general solution dy + cos(x) y = cos(x) dx ○ y = 1+ ke-2 sin(x) Oy² y² = 2 sin(x) + c y=e=sin(x) + cos(x) esin(x) + c Oy=sin(x) + ke¯ sin(x)
Expert Solution
Step 1

Given differential equation is dydx+cosxy=cosx........1.

We have to find the general solution of the given differential equation.

The differential equation 1 is in the standard form of dydx+Pxy=Qx

Here, Px=cosx.

Now, first find the integrating factor, which is given by

I.F=ePxdx=ecosxdx=esinx

Hence, I.F=esinx.

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