For each example below, find the values of the parameters (constants) r and s so that the function y(t) satisfies the differential equation. If there is more than one correct value, separate them by commas (e.g.3,2). You may enclose them in "curlies" if you prefer (e.g.{3,2}).(y' means dydt)y(t)=ert satisfies y'3y =0 if r = y(t)=e(tr/s) satisfies y'3 t14y =0 if r = and s = y(t)=tr satisfies y''2t2y =0 if r = y(t)=cos t satisfies y''+4 y =0 if =