Question

3Х"2 -7Х+ 4 больше или равно 0

Answer 1

3х²-7х+4 ≥ 0
3х²-7х+4 = 0
D = 7² - 4 • 4 • 3 = 49 - 48 = 1
x1 = 7 - 1 / 6 = 1
x2 = 7 + 1 / 6 = 8/6 = 4/3
(x-1)(x-4/3) ≥ 0
_______o(1)_____o(4/3)________>
Ответ: (-∞; 1); (4/3; +∞)