Determine if x = 0 is an ordinary point, a regular singular point, or an irregular singular point. If it is a regular singular point, then nd the exponents of the differential equation at x = 0. 7. 22:23)" + (cos x)y' + ny = 0 8. x(1 + 2031\" + 431' + 39:): = 0 9. xy" + (x x3)y' + (sin x)y = 0