linear equation of order one
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.
\[\frac{ dy }{ dx }+\frac{ ny }{ x+a}=\frac{ bx }{ x+a }\]
\[(x+a)y'+ny=bx\]divide both sides by (x+a)\[\frac{dy}{dx}+\frac{n}{(x+a)}y=\frac{bx}{(x+a)}\]
i got \[(x+a)^n +c\] for IF
u have gt the right IF
so \[y(x+a)^n=\int\limits_{}^{}\frac{ bx }{ x+a }(x+a)^n\]
i got stuck here, i dont know now lol
R.H.S. \[b \int\limits x(x+a)^{n-1} dx\]\[b \int\limits ((x+a)-a)(x+a)^{n-1}dx\]\[b \int\limits ((x+a)^n-a(x+a)^{n-1})dx\]\[b \int\limits (x+a)^ndx - b \int\limits a(x+a)^{n-1}dx\]
can u solve it further ?
ill try
ill try\[b\frac{ (x+a) ^{2n}}{ 2 }-ab \frac{ (x+a)^{2(n-1)} }{ 2 }\]
no
\[b \frac{(x+a)^{n+1}}{(n+1)}-ab \frac{(x+a)^n}{n}\]
\[b \int\limits (x+a)^n dx\]assume (x+a)=u then dx=du \[b \int\limits u^ndu=b \frac{u^{n+1}}{(n+1)}=b \frac{(x+a)^{n+1}}{(n+1)}\]
gt it now ?
@Caerus
yip
\[y(x+a)^n=\frac{ b(x+a)^{n+1} }{ (n+a)}-\frac{ ab(x+a)^n }{ n }\]
+c
i think this is enough as the answer..
yeah just correct RHS \[\frac{b(x+a)^{n+1}}{(n+1)}-\frac{ab(x+a)^n}{n}+c\]
yehey, thanks again, lets move on
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