give answer in 2 step with explanation at the end of each step and final answer at the end:Solve the system of ODEs {z(t),y(t)} given by : (1) - (b) y(t) ~ 20 +3y—2
Question:
give answer in 2 step with explanation at the end of each step and final answer at the end:
Solve the system of ODEs {z(t),y(t)} given by :
(1) -
(b) y(t) ~ 20 +3y—2
This is AI generated Response.
Asked by: Pagal
Created at: 2025-06-06 03:17:26
Asked by: Pagal
Created at: 2025-06-06 03:17:26
Final Answer:
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Let's clarify the system from the image:
Given:
\[
\begin{cases}
\dot{x} = y \\
\dot{y} = 2x + 3y - 2
\end{cases}
\]
Let's solve this in 2 steps with explanations:
---
### **Step 1: Combine into a single second-order ODE**
We have:
- \(\dot{x} = y\)
- \(\dot{y} = 2x + 3y - 2\)
Differentiate the first equation with respect to \(t\):
\[
\frac{d}{dt}(\dot{x}) = \frac{d}{dt}(y) \implies \ddot{x} = \dot{y}
\]
Now, substitute \(\dot{y}\) from the second equation:
\[
\ddot{x} = 2x + 3y - 2
\]
But from the first equation, \(y = \dot{x}\):
\[
\ddot{x} = 2x + 3\dot{x} - 2
\]
**Explanation:**
We have reduced the system to a single second-order ODE:
\[
\ddot{x} - 3\dot{x} - 2x = -2
\]
---
### **Step 2: Solve the second-order ODE**
The equation is:
\[
\ddot{x} - 3\dot{x} - 2x = -2
\]
**Homogeneous solution:**
Solve \(\ddot{x} - 3\dot{x} - 2x = 0\)
The characteristic equation:
\[
r^2 - 3r - 2 = 0
\]
\[
r = \frac{3 \pm \sqrt{9 + 8}}{2} = \frac{3 \pm \sqrt{17}}{2}
\]
So, homogeneous solution:
\[
x_h(t) = A e^{r_1 t} + B e^{r_2 t}
\]
where \(r_1 = \frac{3 + \sqrt{17}}{2}\), \(r_2 = \frac{3 - \sqrt{17}}{2}\).
**Particular solution:**
For the constant right side, try \(x_p = K\):
Plug into the ODE:
\[
0 - 0 - 2K = -2 \implies K = 1
\]
**Total solution:**
\[
x(t) = A e^{r_1 t} + B e^{r_2 t} + 1
\]
Recall \(y = \dot{x}\):
\[
y(t) = A r_1 e^{r_1 t} + B r_2 e^{r_2 t}
\]
**Explanation:**
We solved the second-order ODE, determined the complementary and particular solutions, and expressed both \(x(t)\) and \(y(t)\) in terms of exponentials.
---
## **Final Answer:**
\[
\boxed{
\begin{aligned}
x(t) &= A e^{r_1 t} + B e^{r_2 t} + 1 \\
y(t) &= A r_1 e^{r_1 t} + B r_2 e^{r_2 t}
\end{aligned}
}
\]
where \(r_1 = \frac{3 + \sqrt{17}}{2}\), \(r_2 = \frac{3 - \sqrt{17}}{2}\), and \(A, B\) are constants determined by initial conditions.
Question:
Solve the system of ODEs {z(t),y(t)} given by : y(t)=2x+3y—2
This is AI generated Response.
Asked by: Pagal
Created at: 2025-06-06 03:19:40
Asked by: Pagal
Created at: 2025-06-06 03:19:40
Final Answer:
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Did you like this answer?
Let's clarify the problem:
You provided the relation:
\[
y(t) = 2x + 3y - 2
\]
However, this appears to be an equation involving \(x(t)\) and \(y(t)\). To proceed, I will assume that the system of ODEs you're referring to is:
\[
\begin{cases}
\dot{x} = y \\
\dot{y} = 2x + 3y - 2
\end{cases}
\]
which aligns with similar previous problems, as the relation \( y(t) = 2x + 3y - 2 \) can be rearranged or used as a differential relation. Alternatively, if your statement was a typo or shorthand for the system, the solution approach is similar.
---
### **Step 1: Convert the system into a single second-order ODE**
Given:
\[
\dot{x} = y
\]
\[
\dot{y} = 2x + 3y - 2
\]
Differentiate \(\dot{x} = y\):
\[
\ddot{x} = \dot{y}
\]
Substitute \(\dot{y}\):
\[
\ddot{x} = 2x + 3y - 2
\]
Since \(y = \dot{x}\):
\[
\ddot{x} = 2x + 3 \dot{x} - 2
\]
**This leads to the second-order ODE:**
\[
\boxed{
\ddot{x} - 3 \dot{x} - 2x = -2
}
\]
**Explanation:**
By differentiating the first equation and substituting from the second, we reduce the system to a single second-order linear nonhomogeneous differential equation in \(x(t)\).
---
### **Step 2: Solve the second-order ODE**
The equation:
\[
\ddot{x} - 3 \dot{x} - 2x = -2
\]
**Homogeneous part:**
\[
\ddot{x} - 3 \dot{x} - 2x = 0
\]
Characteristic equation:
\[
r^2 - 3r - 2 = 0
\]
Solve for \(r\):
\[
r = \frac{3 \pm \sqrt{9 + 8}}{2} = \frac{3 \pm \sqrt{17}}{2}
\]
Homogeneous solution:
\[
x_h(t) = C_1 e^{r_1 t} + C_2 e^{r_2 t}
\]
where
\[
r_1 = \frac{3 + \sqrt{17}}{2}, \quad r_2 = \frac{3 - \sqrt{17}}{2}
\]
**Particular solution:**
Since RHS is a constant \(-2\), try \(x_p = K\):
Plug into the ODE:
\[
0 - 0 - 2K = -2 \implies K = 1
\]
**General solution:**
\[
x(t) = C_1 e^{r_1 t} + C_2 e^{r_2 t} + 1
\]
Recall \(y(t) = \dot{x}(t)\):
\[
y(t) = C_1 r_1 e^{r_1 t} + C_2 r_2 e^{r_2 t}
\]
---
## **Final answer:**
\[
\boxed{
\begin{aligned}
x(t) &= C_1 e^{\frac{3 + \sqrt{17}}{2} t} + C_2 e^{\frac{3 - \sqrt{17}}{2} t} + 1 \\
y(t) &= C_1 \left(\frac{3 + \sqrt{17}}{2}\right) e^{\frac{3 + \sqrt{17}}{2} t} + C_2 \left(\frac{3 - \sqrt{17}}{2}\right) e^{\frac{3 - \sqrt{17}}{2} t}
\end{aligned}
}
\]
where \(C_1, C_2\) are arbitrary constants determined by initial conditions.
---
**Note:** If the original statement was different or involved additional relations, please clarify for a more precise solution.
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