Відповіді §.5 - §.6 » §.6 (3.5)
5. √(1/5 x-7) 1/5x – 7 ≥ 0. 1/5x ≥ 7. x ≥ 35. [35; +∞). √(-11-44x) –11 – 44x ≥ 0. –44x ≥ 11. x ≤ –1/4. (–∞; –1/4]. (–∞; ––1/4] ∪ [35; +∞). (–∞;–1/4] ∩ [35; +∞) = ∅.
5. √(1/5 x-7) 1/5x – 7 ≥ 0. 1/5x ≥ 7. x ≥ 35. [35; +∞). √(-11-44x) –11 – 44x ≥ 0. –44x ≥ 11. x ≤ –1/4. (–∞; –1/4]. (–∞; ––1/4] ∪ [35; +∞). (–∞;–1/4] ∩ [35; +∞) = ∅.