Решите неравенство
2*(1+cos4x)/2≥3/2 2+2cos4x≥3 2cos4x≥1 cos4x≥1/2 -π/3+2πn≤4x≤π/3+2πn -π/12+πn/2≤x≤π/12+πn/12 x∈[-π/12+πn/2;π/12+πn/2]