Find the solution of the given initial value problem in explicit form. sin(2x) da + cos(9y) dy = 0, y(5) 9 y(x) :

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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**Problem Statement:**

Find the solution of the given initial value problem in explicit form.

\[
\sin(2x) \, dx + \cos(9y) \, dy = 0, \quad y \left( \frac{\pi}{2} \right) = \frac{\pi}{9}
\]

**Solution:**

\[
y(x) = \text{[Solution here]}
\]

**Explanation:**

This problem is asking to solve a differential equation with given initial conditions. 

1. **Step 1: Separate Variables**
   - Rewrite the equation by separating variables involving \( x \) and \( y \).

    \[
    \sin(2x) \, dx = -\cos(9y) \, dy
    \]

2. **Step 2: Integrate Both Sides**
   - Integrate both sides of the equation.

    \[
    \int \sin(2x) \, dx = -\int \cos(9y) \, dy
    \]

3. **Step 3: Apply Initial Conditions**
   - After finding the integrals, apply the initial condition \( y \left( \frac{\pi}{2} \right) = \frac{\pi}{9} \) to determine the constant of integration.

4. **Step 4: Solve for \( y(x) \)**
   - Express the equation in the explicit form \( y = y(x) \).

The box is provided to input the final answer for \( y(x) \).
Transcribed Image Text:**Problem Statement:** Find the solution of the given initial value problem in explicit form. \[ \sin(2x) \, dx + \cos(9y) \, dy = 0, \quad y \left( \frac{\pi}{2} \right) = \frac{\pi}{9} \] **Solution:** \[ y(x) = \text{[Solution here]} \] **Explanation:** This problem is asking to solve a differential equation with given initial conditions. 1. **Step 1: Separate Variables** - Rewrite the equation by separating variables involving \( x \) and \( y \). \[ \sin(2x) \, dx = -\cos(9y) \, dy \] 2. **Step 2: Integrate Both Sides** - Integrate both sides of the equation. \[ \int \sin(2x) \, dx = -\int \cos(9y) \, dy \] 3. **Step 3: Apply Initial Conditions** - After finding the integrals, apply the initial condition \( y \left( \frac{\pi}{2} \right) = \frac{\pi}{9} \) to determine the constant of integration. 4. **Step 4: Solve for \( y(x) \)** - Express the equation in the explicit form \( y = y(x) \). The box is provided to input the final answer for \( y(x) \).
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