Предмет: Математика, автор: xxxbogdan2032xxx

Найти нули функции
4Х^3-3Х^2

Ответы

Автор ответа: kotofeevicholeg
1

Ответ:

Пошаговое объяснение:

y = 4х³ - 3х²

Нули - когда у = 0. у= 0 при х, соотв.:

4х³ - 3х² = 0

х²(4х - 3) = 0

х² = 0 или 4х - 3 = 0

х = 0, 4х = 3

х = 0 или х = 3/4 = 0,75

Ответ: (0; 0), (0,75; 0)


Svetishche: ответ неверен. по определению нули функции - это значение переменной х, а не координаты точки. На ЕГЭ поставят за такое решение 0 баллов
Svetishche: При записи решении уравнений два знака равно в одной строчке- это крамола!
kotofeevicholeg: ну так я не для ЕГЭ оформляю, а для обычного решения на сайте. Спасибо надо сказать что я вообще расписываю, а не пишу что то вроде: ответ двлаоыдвлоады объясннение: ыдлаорыдавло. Тип решение правильное, а как его записывать каждый уже сам должен думать исходя из того, куда и кому он пишет решение.
kotofeevicholeg: Мне что, делать что ли нечего сидеть тут оформлять по строчкам
Svetishche: Дело не в записи, а в сути. Есть принципиальная ошибка в том, что вы не знаете, что такое нули функции. есть знание некоторого алгоритма действий и все.
Svetishche: Пиши мне, если будут вопросы.
kotofeevicholeg: Проще пентограмму начертить и МоТеМоТиЧкУ призвать
Svetishche: You can't be afraid of it.
Автор ответа: Svetishche
0

Ответ:

Х=0  Х=3/4

Пошаговое объяснение:

4Х^3-3Х^2=0

Х^2(4Х-3)=0

Х=0 или 4Х-3=0

               4Х=3

                 Х=3/4

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