First slide
Methods of solving first order first degree differential equations
Question

 The solution of the differential equation xdydx+2y=x2,(x0) with y(1)=1 then y(2) is

Moderate
Solution

 dydx+2xy=x I. F=e2xdx=e2logx=x2 Solution of the D.E in y.x2=xx2dxx2y=x44+cy=x24+cx2 If  y(1)=11=14+cc=34y(x)=x24+34x2y(2)=44+316

=16+316=1916=1.11

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