F x )= x 4 18x 2 July 8, 2019 16 32 64 128 F x )= x 4 18x 2 81 F x )= 2x 4 x 3 18x 2 9x F x )= 2x 4 18x 2 Cho hàm số f x )= x 4 18x 2 4
