Предмет: Математика, автор: truscheva2017

ОЧЕНЬ СРОЧНО ПОМОГИТЕ ПОЖАЛУЙСТА!
Решите графически уравнение -x^3+3x+4=0

Ответы

Автор ответа: novo51

0

Решение уравнение - это координата точки пересечения графиков у=х³ и у=3х+4.
Построим эти графики по точкам
у=х³
х 0 1(-1) 2(-2)
у 0 1(-1) 8(-8)
у=3х+4
х 0 2
у 4 10
Построим графики.
По графику точка пересечения имеет координату х≈2,2.
Ответ. х=2,2.

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