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Консультация № 176481
04.02.2010, 12:46
0.00 руб.
0
4
1
Здравствуйте уважаемые эксперты помогите решить пожалуйста задачку по мат.анализу
Найти промежутки выпуклости и точки перегиба функции
Найти промежутки выпуклости и точки перегиба функции
Обсуждение
04.02.2010, 14:01
общий
это ответ
Здравствуйте, Верещака Андрей Павлович.
f'(x)=3x2-12x+1
f''(x)=6x-12
Вторая производна отрицательна при x<2, положительна при x>2. Отсда следует, что
при x<0 функция выпукла вверх, при x>0 функция выпукла вниз. x=2 - точка перегиба.
f'(x)=3x2-12x+1
f''(x)=6x-12
Вторая производна отрицательна при x<2, положительна при x>2. Отсда следует, что
при x<0 функция выпукла вверх, при x>0 функция выпукла вниз. x=2 - точка перегиба.
5
Спасибо огромное за помощь
Неизвестный
04.02.2010, 16:10
общий
star9491:
Может, все-таки:
при x < 2 функция выпукла вверх, при x > 2 - вниз; точка (2, -14) - точка перегиба
Может, все-таки:
при x < 2 функция выпукла вверх, при x > 2 - вниз; точка (2, -14) - точка перегиба
Форма ответа
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