Y 2 7y 14 July 8, 2019 16 32 64 128 Y 2 7y 144 2x y 2 14x 7y 18 2x y 2 3x 7y 14 4x 2 y 2 14x 7y 4xy 12 Y 3 7y 2 2y 14 Y'' + 2y' + y = 0 7y-14 0 2y 8
