285.б) lnx < ln2e>1y=lnx - возрастает{x>0{x<2 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\------ 0 ------------- 2 ----------\\\\\\\\\\\\\\\\\\\\\\\\\\\\x∈(0; 2)д) ln3x≤ln6e>1y=lnx - возрастает{3x>0{3x≤6{x>0{x≤2 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\---------0 ---------- 2 --------------\\\\\\\\\\\\\\\\\\\\\\\\\\\x∈(0; 2]286.a) log₂ x>2 log₂ x>log₂ 2² log₂ x>log₂ 42>1y=log₂ x - возрастает{x>0{x>4 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\-------- 0 ----------- 4 ------------ \\\\\\\\\\\\\\\\\\\x∈(4; +∞)б) log₂ x<3 log₂ x<log₂ 2³ log₂ x<log₂ 82>1y=log₂ x - возрастает{x>0{x<8 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\---------0 ----------------8 ---------\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\x∈(0; 8)в) lgx<0 lgx<lg110>1y=lgx - возрастает{x>0{x<1 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\----------0 -----------1 -----------\\\\\\\\\\\\\\\\\\\\\\\\\\\\x∈(0; 1)г) log₀.₂ x>1 log₀.₂ x> log₀.₂ 0.20.2<1y=log₀.₂ x - убывает{x>0{x<0.2 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\------ 0 ---------- 0.2 ----------\\\\\\\\\\\\\\\\\\\\\\\x∈(0; 0,2)д) log₀.₂ x<0 log₀.₂ x<log₀.₂ 10.2<1у=log₀.₂ x - убывает{x>0{x>1 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\-----0 ----------- 1 ----------- \\\\\\\\\\\\\\\\\\x∈(1; +∞)е) log₀.₅ x≥2log₀.₅ x≥ log₀.₅ 0.5²log₀.₅ x≥ log₀.₅ 0.250.5<1у=log₀.₅ x - убывает{x>0{x≤0.25 \\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\------ 0 -----------0.25 -----------\\\\\\\\\\\\\\\\\\\\\\\\\\\x∈(0; 0,25]