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Оси и плоскости тела человека - Тело человека состоит из определенных топографических частей и участков, в которых расположены органы, мышцы, сосуды, нервы и т.д. Отёска стен и прирубка косяков - Когда на доме не достаёт окон и дверей, красивое высокое крыльцо ещё только в воображении, приходится подниматься с улицы в дом по трапу. Дифференциальные уравнения второго порядка (модель рынка с прогнозируемыми ценами) - В простых моделях рынка спрос и предложение обычно полагают зависящими только от текущей цены на товар. | Площадь криволинейного сектора. Некоторые плоские фигуры удобно описывать в полярных координатах , где – полярный радиус точки , а – её полярный угол (угол, на который надо повернуть в направлении против часовой стрелки положительный луч оси до совмещением с радиус–вектором точки . Формулы полярной замены:  Криволинейный сектор в полярных координатах задаётся в виде , где функция определяет границу сектора. y    x Площадь криволинейного сектора равна  2) Длина дуги кривой.Пусть кривая задана как график функции , определенной на отрезке . Тогда длина L дуги равна  Если кривая задана в параметрическом виде , тогда  Длина дуги в полярных координатах. Частный случай параметрического задания кривой – её задание в полярных координатах: , . Тогда , и прямое дифференцирование и подстановка производных в формулу длины дуги, заданной в параметрическом виде, дает  3) Объем тела вращения. Многие пространственные объекты удобно представлять себе как множество точек, заметаемых той или иной плоской фигурой при её вращении в трёхмeрном пространстве вокруг какой−нибудь прямой, например, вокруг оси . y y = f(x) a b x z Пусть тело получено вращением вокруг оси криволинейной трапеции, ограниченной графиком функции , осью и прямыми , . Тогда его обьём равен  4) Площадь поверхности тела вращения. В той же ситуации, что и в пункте 3), площадь боковой поверхности тела вращения равна  Контрольная работа №1 Вариант 0 Решение варианта 0 1) . 2) . 3) . 4) . 5) . 6)  . 7)  Найдем интеграл .  . Ответ: . 8) . Разложим интегрируемую функцию на простые дроби . Приравняв числители, получим . Для нахождения коэффициентов A, B, C подставим в данное тождество три различных значения переменной x:  Таким образом    Контрольная работа №2 Вариант 0 1)  | 8)  | 15)  | 2)  | 9) 0 | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Решение варианта 0 1) . 2) . 3) . 4)  Поделим с остатком числитель подынтегральной функции на знаменатель.   . 5)  Разложим интегрируемую функцию на простые дроби . Приравняв числители, получим , откуда  Таким образом   6)    Откуда  Таким образом  7)    . 8)   Таким образом   9)  . 10)      . 11)    Таким образом,  Ответ: . 12)   Вычисляем первый из двух оставшихся интегралов:  Второй интеграл равен  Ответ: . 13)   14)   15)   16)   17)  18)    19)  . Разложим интегрируемую функцию на простые дроби. Поскольку дробь неправильная, сначала поделим с остатком ее числитель на знаменатель    Приравняв числители, получим  Откуда  Таким образом     20)   Приравняв числители, получим  Откуда   Таким образом  i)  ii)    Ответ:  Вариант 1 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 2 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 3 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 4 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 5 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 6 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11 )  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 7 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 8 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 9 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 10 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11 )  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 11 Вариант 12 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант №13 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 14 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант №15 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант №16 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант №17 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант №18 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 19 1)  | 8)  | 15)  | 2)  | 9)  | 16)  | 3)  | 10)  | 17)  | 4)  | 11)  | 18)  | 5)  | 12)  | 19)  | 6)  | 13)  | 20)  | 7)  | 14)  | | Вариант 20 ©2015 www.megapredmet.ru Все права принадлежат авторам размещенных материалов. |