Предмет: Алгебра, автор: Кнопка56

Найти площадь криволинейной трапеции:

 3

  ∫    (3х+2) dx

 

 2

Ответы

Автор ответа: HUH39I
0
Воспользуемся формулой Ньютона-Лейбница:
[2; 3] ∫(3x + 2)dx = (1,5x² - 2x)| [2; 3] = (1,5*3² + 2*3) - (1,5*2² + 2*2) = 9,5.
Автор ответа: Опыт
0
S=(x2-x1)*(f(x2)+f(x1))/2=1*(8+11)/2=9,5
и зачем интеграл здесь приплели.
смотря как задача стоит найти площадь или вычислить интеграл.
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