(3) (x² − 1) dy + 2y = (x+1)² dx HINT: rewrite in the form y'+ai(x)y=r(x) find p = e-2atan(x)=(1-x)/(1+x) ANSWER: y = (x + 1)(x+c)/(x-1)

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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Differential Equations

Please, show all the work and every step

(3) (x² − 1) dy + 2y = (x+1)²
dx
HINT: rewrite in the form y'+ai(x)y=r(x) find p = e-2atan(x)=(1-x)/(1+x)
ANSWER: y = (x + 1)(x+c)/(x-1)
Transcribed Image Text:(3) (x² − 1) dy + 2y = (x+1)² dx HINT: rewrite in the form y'+ai(x)y=r(x) find p = e-2atan(x)=(1-x)/(1+x) ANSWER: y = (x + 1)(x+c)/(x-1)
Expert Solution
Step 1

We are given the equation

         (x- 1)dy/dx + 2y = (x + 1). . . . . . . . (1) 

     => dy/dx + 2y/(x- 1) = (x + 1)/(x- 1) 

                                        = (x + 1)2/{(x - 1)(x + 1)} 

                                        = (x + 1)/(x - 1)  . . . . . (2) 

   

So, integrating factor, I.F = e^{ ∫2dx/(x- 1) } 

                                             = e^[ ln{(x - 1)/(x + 1)} ]

                                             = (x - 1)/(x + 1) 

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