Log x 4 2 3x 2 x 1 0 July 8, 2019 16 32 64 128 2 log x 4 2 3x − x − 1 ≤ 0 Log x 2 ( 4 x 2 − 3 x + 1 ) ≥ 0 log 2 ( 4 2 − 3 + 1 ) ≥ 0