Предмет: Алгебра, автор: a797221999

1)Найти общее решение дифференциальных уравнений методом разделения переменных:
3xdy= 2ydx.

Ответы

Автор ответа: KysZaYshko
1

xdy+2ydx=0 l : dx

Разрешим данное дифференциальное уравнение относительно у'

y`= -2y/x  (- по середине дроби) - уравнение с разделяющимися переменными

Воспользуемся определением дифференциала

dy/dx = -2y/x (- по середине дроби)

Разделяем переменные

dy/y = -2dx/x (- по середине)

интегрируя обе части уравнения, получаем:

In lyl = In l1/x2 (во второй степени) + ln C

Получили общее решение



a797221999: А ты мне можешь ещё помочь в двух заданиях? Пожалуйста
Похожие вопросы
Предмет: Математика, автор: Mutuzik
Предмет: Русский язык, автор: Аноним
Предмет: Английский язык, автор: glushkovs2000
1) This dish ................. very good.
a) is smelling
b) smell
c) smells
d) smelling
2) He ................. the piano every day.
a. practicing
b. practice
c. practices
d. practicing

3) Anna ................. right now.
a. is swimming
b. swim
c. swims
d. am swimming
4) I ................. you now.
a. is believing
b. believe
c. am believing
d. believes
5) She doesn't have ................. money.
a. much
b. many
c. little
d. a little
6) I would like ................. pepper on my vegetables.
a. a few
b. a little
c. few
d. many
7) There ................. bad news on TV tonight.
a. is too much
b. are too many
c. are few
d. are a few
8) Could you give him ................. ?
a. an advice
b. some good advices
c. a good advice
d. some good advice
9) My dad bought me ................. car that I wanted for my birthday.
a. a
b. some
c. the
d. that
10) ................. Statue of Liberty was a generous gift of friendship from ................. France to ................. United States.
a. the, the, the
b. the, -, the
c. the, -, -
d. a, -, the
11) Please give me ................. cup of ................. strong coffee with ................. cream and ................. sugar. I hate ................. black coffee, I'm afraid.
a. a, -, -, -, -
b. the, the. the, the, -
c. the, -, -, -, -
d. a, the, -, -, the
12) 6 people were in the shop. 2 were buying fish. ................. was looking at newspapers. ................. was eating a chocolate bar. ................. were walking somewhere around looking for even more food.
a. The other, Other, Others
b. Another, Another, The others
c. Others, Another, Others
d. Others, Another, The others
13) We're looking for a nice ................. .
a. furniture
b. view
c. work
d. accommodation
14) We watched ................. news on ................. Internet.
a. this, -
b. these, -
c. this, the
d. these, the
15) I see ................. at the university every day.
a. she
b. her
c. herself
Предмет: Математика, автор: Русик20071