Ask your own question, for FREE!
Differential Equations 24 Online
OpenStudy (caerus):

linear equation of order one

OpenStudy (caerus):

a,b,n, are constant with n is not equal with 0,n is not equal to -1 (x+a)y'=bx-ny find general solution of linear equation.

OpenStudy (caerus):

\[\frac{ dy }{ dx }+\frac{ ny }{ x+a}=\frac{ bx }{ x+a }\]

OpenStudy (jiteshmeghwal9):

\[(x+a)y'+ny=bx\]divide both sides by (x+a)\[\frac{dy}{dx}+\frac{n}{(x+a)}y=\frac{bx}{(x+a)}\]

OpenStudy (caerus):

i got \[(x+a)^n +c\] for IF

OpenStudy (jiteshmeghwal9):

u have gt the right IF

OpenStudy (caerus):

so \[y(x+a)^n=\int\limits_{}^{}\frac{ bx }{ x+a }(x+a)^n\]

OpenStudy (caerus):

i got stuck here, i dont know now lol

OpenStudy (jiteshmeghwal9):

R.H.S. \[b \int\limits x(x+a)^{n-1} dx\]\[b \int\limits ((x+a)-a)(x+a)^{n-1}dx\]\[b \int\limits ((x+a)^n-a(x+a)^{n-1})dx\]\[b \int\limits (x+a)^ndx - b \int\limits a(x+a)^{n-1}dx\]

OpenStudy (jiteshmeghwal9):

can u solve it further ?

OpenStudy (caerus):

ill try

OpenStudy (caerus):

ill try\[b\frac{ (x+a) ^{2n}}{ 2 }-ab \frac{ (x+a)^{2(n-1)} }{ 2 }\]

OpenStudy (jiteshmeghwal9):

no

OpenStudy (jiteshmeghwal9):

\[b \frac{(x+a)^{n+1}}{(n+1)}-ab \frac{(x+a)^n}{n}\]

OpenStudy (jiteshmeghwal9):

\[b \int\limits (x+a)^n dx\]assume (x+a)=u then dx=du \[b \int\limits u^ndu=b \frac{u^{n+1}}{(n+1)}=b \frac{(x+a)^{n+1}}{(n+1)}\]

OpenStudy (jiteshmeghwal9):

gt it now ?

OpenStudy (jiteshmeghwal9):

@Caerus

OpenStudy (caerus):

yip

OpenStudy (caerus):

\[y(x+a)^n=\frac{ b(x+a)^{n+1} }{ (n+a)}-\frac{ ab(x+a)^n }{ n }\]

OpenStudy (caerus):

+c

OpenStudy (caerus):

i think this is enough as the answer..

OpenStudy (jiteshmeghwal9):

yeah just correct RHS \[\frac{b(x+a)^{n+1}}{(n+1)}-\frac{ab(x+a)^n}{n}+c\]

OpenStudy (caerus):

yehey, thanks again, lets move on

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!