For #3 and 4, consider the 2nd order differential equation y" + x - y' +y = 0. 3. If you were to solve this by the method of power series, on what domain would you expect the series to 8 pts converge? Explain 4. Using series, find the general solution to this differential equation. For full credit, give the answer as two 18 pts linearly independent series, each of which you may give either in E -form (the pattern will permit that!) or by writing out at least the first 4 terms in each series