Лучшие помощники
- Megamozg 2205 б
- Matalya1 1800 б
- DevAdmin 1720 б
- arkasha_bortnikov 900 б
- Dwayne_Johnson 870 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
Какие из следующих утверждений верны? 1. Площадь ромба равна произведению двух его смежных сторон на синус угла между ними. 2. В тупоуго...
Найди наибольший делитель числа, не равный самому числу 137 221 128 147 135 86 217 101 183 132 25 133 32 219 116 46 195 62 159 36...
Как соотносятся удельные поверхности (s* = S/V) наноразмерных объектов: 1 – пленки, площадью 1х1 м. толщиной 10 нм; 2 – нитей, сечением 10х10...
Сколько метров нужно добавить, чтобы получить 10000 см?...
A) туристы взяли в поход 24 банки фасоли,сгущенки вдвое меньше,а тушенки вдвое больше,чем фасоли.Сколько консервов взяли туристы. Б)через неделю у них...