21 using the method of variation of parameters to find a particular solution to the differential equation y"-2y' + y - 4e-3t y(t) =e y)- (a) (b) y(t) =e 1 1 (c)

21 Using the method of variation of parameters to find a particular solution to the differential equation y"-2y' + y - 4e-3t Y(t) =e Y)- (A) (B) Y(t) =e 1 1 (C) (D) Y(t) e