Find three linearly independent solutions of the 3rd-order linear homogeneous differential equation y'" - 2y" - 39y' - 72y = 0 The linearly independent solutions are y1 = y2 = y3 = and the general solution of the equation is y (x) = where C1, C2, and c3 are arbitrary constants. (Note: If m1, m2 and m3 are three solutions of the auxiliary (characteristic) equation such that mi