Предмет: Алгебра, автор: HiKlasik337

Решить графическим способом(метод интервалов)
3x^2-4x+1>=0

Ответы

Автор ответа: Diana1243679
0
6-4x+1=0
7-4x=0
-4x=-7
X=4
7
Автор ответа: sultanomyrserik
1

Объяснение:

3х²-4х+1》0,

а=3, b=-4, c=1.

D=b²-4ac=(-4)²-4×3×1=16-12=4.

x _{1} =  \frac{ - b -  \sqrt{d} }{2a}  =  \frac{4 - 2}{6}  =  \frac{2}{6}  =  \frac{1}{3}

x _{2} =  \frac{ - b +  \sqrt{d} }{2a}  =  \frac{4 + 2}{6}  =  \frac{6}{6}  = 1

Нарисуем через метод интервалов.

+ – +

________1/3_______1_______

Ответ:

[⅓; +бесконечность)

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