Find general solutions of the differential equation  x^3y'=x^2y-y^3

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter11: Differential Equations
Section11.CR: Chapter 11 Review
Problem 29CR
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Find general solutions of the differential equation  x^3y'=x^2y-y^3

Expert Solution
Step 1

the given equation is x3y'=x2y-y3

divide the equation by x3

y'=1xy-1x3y3            ...... (1)

rewrite 

y'-1xy=-1x3y3

the given equation is of the form y'+p(x)y=q(x)yn

comparing we get p(x)=-1x

 q(x)=-1x3

substitute v=y1-3

taking derivative 

 v=y-2y=v-12y'=-12v-32v'

 

 

 

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ISBN:
9780321964038
Author:
GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:
Pearson Addison Wesley,