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