Y 2x 2 12x 6 July 8, 2019 16 32 64 128 Y 2x 3 3x 2 12x 6 The function y 2x 3 9x 2 12x 6 is monotonic decreasing when Y 4y '+ 4y =( 12x 2 6x e 2x Y = (6x - 12)/(x ^ 2 - 2x)
