Integrate[(1-s)/s,{s,a,x},Assumptions->{0<a<x}]

Exp[%]//Simplify

Example 02

y[x_]:=c[1](x^2)+c[2]/(x^2)

Solve[{2y[1]+y'[1]==0,y[2]+y'[2]==0},{c[1],c[2]}]