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`(2y-e^x)dx + xdy = 0` Solve the first-order differential equation by any appropriate method

Given` (2y-e^x)dx + xdy = 0`


=>` 2y-e^x+xdy/dx =0`


=>` 2y/x -e^x/x +dy/dx=0`


=>` 2y/x +y'=e^x/x`


=> `y'+(2/x)y=(e^x)/x`


when the first order linear ordinary Differentian equation has the form of


`y'+p(x)y=q(x)`


then the general solution is ,


`y(x)=((int e^(int p(x) dx) *q(x)) dx +c)/e^(int p(x) dx)`


so,


` y'+(2/x)y=(e^x)/x--------(1)`


`y'+p(x)y=q(x)---------(2)`


on comparing both we get,


`p(x) = (2/x) and q(x)=(e^x)/x`


so on solving with the above general solution we get:


y(x)=`((int e^(int p(x) dx) *q(x)) dx +c)/e^(int p(x) dx)`


=`((int e^(int (2/x) dx) *((e^x)/x)) dx +c)/e^(int (2/x) dx)`


first we shall solve


`e^(int (2/x) dx)=e^(ln(x^2))=x^2`     


So proceeding further, we get


y(x) =`((int e^(int (2/x) dx) *((e^x)/x)) dx +c)/ e^(int (2/x) dx)`


 =`(int (x^2 *e^x/x dx) +c)/x^2`


=`(int xe^xdx +c)/x^2`


`=(xe^x -e^x +c)/x^2 `


=`(e^x (x- 1) +c)/x^2`


`y(x) =(e^x (x- 1) +c)/x^2 `

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