1. The problem statement, all variables and given/known data Given y1=x^2 and y2=1 are two solutions of the DE y"=(x/y)y' Are the functions -y1 and y1 and y2 also the solutions of the equation?If not why? 2. Relevant equations 3. The attempt at a solution I cannot see how to proceed.However,I can see that it is a non-linear DE of 2nd degree where we cannot simply sum the solutions to have another solution... That might explain the case that y1+y2 is not a solution... what about the first case,i.e -y1?