Лучшие помощники
- Megamozg 2180 б
- Matalya1 1800 б
- DevAdmin 1690 б
- arkasha_bortnikov 840 б
- Dwayne_Johnson 840 б
To solve the given differential equation, we can assume a solution of the form y=e^(rt), where r is a constant to be determined.
Plugging this assumed solution into the differential equation, we get:
r^2e^(rt) - 3re^(rt) + 2e^(rt) = 0
Dividing through by e^(rt), we have:
r^2 - 3r + 2 = 0
This is a quadratic equation, which can be factored as:
(r-1)(r-2) = 0
So, we have two possible values for r: r=1 and r=2.
Therefore, the general solution to the differential equation is:
y = c1e^(rt) + c2e^(rt)
Substituting the given initial conditions, we have:
y(0) = c1e^(0) + c2e^(0) = c1 + c2 = 1
y'(0) = c1re^(0) + c2re^(0) = c1r + c2r = 2
From the first equation, we can solve for c1 in terms of c2:
c1 = 1 - c2
Substituting this into the second equation, we have:
(1 - c2)r + c2r = 2
r - c2r + c2r = 2
r = 2
So, we have r=2 and c1=1-c2. Therefore, the particular solution to the differential equation is:
y = (1-c2)e^(2t) + c2e^(2t)
Using the initial condition y(0) = 1, we can solve for c2:
(1-c2)e^(0) + c2e^(0) = 1
1 - c2 + c2 = 1
1 = 1
Since this equation is true for any value of c2, we can choose any value for c2.
Using the initial condition y'(0) = 2, we can solve for c1:
(1-c2)(2e^(0)) + c2(2e^(0)) = 2
2 - 2c2 + 2c2 = 2
2 = 2
Since this equation is also true for any value of c2, we can choose any value for c2.
Therefore, the particular solution to the differential equation with the given initial conditions is:
y = (1-c2)e^(2t) + c2e^(2t)
where c2 can be any real number.
Plugging this assumed solution into the differential equation, we get:
r^2e^(rt) - 3re^(rt) + 2e^(rt) = 0
Dividing through by e^(rt), we have:
r^2 - 3r + 2 = 0
This is a quadratic equation, which can be factored as:
(r-1)(r-2) = 0
So, we have two possible values for r: r=1 and r=2.
Therefore, the general solution to the differential equation is:
y = c1e^(rt) + c2e^(rt)
Substituting the given initial conditions, we have:
y(0) = c1e^(0) + c2e^(0) = c1 + c2 = 1
y'(0) = c1re^(0) + c2re^(0) = c1r + c2r = 2
From the first equation, we can solve for c1 in terms of c2:
c1 = 1 - c2
Substituting this into the second equation, we have:
(1 - c2)r + c2r = 2
r - c2r + c2r = 2
r = 2
So, we have r=2 and c1=1-c2. Therefore, the particular solution to the differential equation is:
y = (1-c2)e^(2t) + c2e^(2t)
Using the initial condition y(0) = 1, we can solve for c2:
(1-c2)e^(0) + c2e^(0) = 1
1 - c2 + c2 = 1
1 = 1
Since this equation is true for any value of c2, we can choose any value for c2.
Using the initial condition y'(0) = 2, we can solve for c1:
(1-c2)(2e^(0)) + c2(2e^(0)) = 2
2 - 2c2 + 2c2 = 2
2 = 2
Since this equation is also true for any value of c2, we can choose any value for c2.
Therefore, the particular solution to the differential equation with the given initial conditions is:
y = (1-c2)e^(2t) + c2e^(2t)
where c2 can be any real number.
0
·
Хороший ответ
14 ноября 2023 05:48
Остались вопросы?
Еще вопросы по категории Математика
Запишите все отрезки, прямые и лучи, изображённые на рисунке 41. Прошу именно рисунок "б"...
Фото задачки Пожалуйста, дайте ответ....
В городской Олимпиаде по литературе участвовало 28 учеников, это 5% всех учеников этой школы, сколько всего учеников в школе ?...
На автозаправке клиент отдал кассиру 1000 рублей и залил в бак 29 литров бензина по цене 33 руб 70 коп. За литр. Какую сумму сдачи он должен получить...
Задание 3.1. Найти область определения функции двух переменных и дать её геометрическую интерпретацию: 3) z=ln(х2+у2-4); 4) z=x+cosy. Задан...
Все предметы