(3) Evaluate 42 sin(y³) dy dx You may want to reverse the order of integration.

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**Problem 3: Evaluation of Double Integral**

Evaluate the double integral:

\[
\int_{0}^{4} \int_{x}^{2} \sin(y^3) \, dy \, dx
\]

Hint: You may want to reverse the order of integration.

**Explanation for Reversing the Order of Integration:**

The given integral involves integrating with respect to \(y\) first, then \(x\). The bounds for \(y\) are from \(x\) to 2, and for \(x\) are from 0 to 4. To reverse the order of integration, analyze the region over which you are integrating.

**Steps to Reverse the Order:**

1. **Sketch the Region of Integration:** 
   - The inner integral for \(y\) is from \(y = x\) to \(y = 2\).
   - The outer integral for \(x\) is from 0 to 4.
   
2. **Identify New Bounds:**
   - Exchange the roles of \(x\) and \(y\) to find the new limits.
   - \(x\) will vary between 0 and \(y\).
   - \(y\) will vary from 0 to 2.

3. **Write the Reversed Integral:**

The double integral with the reversed order is:

\[
\int_{0}^{2} \int_{0}^{y} \sin(y^3) \, dx \, dy
\]

This form may be more convenient for evaluation. Integrate first with respect to \(x\) followed by \(y\).
Transcribed Image Text:**Problem 3: Evaluation of Double Integral** Evaluate the double integral: \[ \int_{0}^{4} \int_{x}^{2} \sin(y^3) \, dy \, dx \] Hint: You may want to reverse the order of integration. **Explanation for Reversing the Order of Integration:** The given integral involves integrating with respect to \(y\) first, then \(x\). The bounds for \(y\) are from \(x\) to 2, and for \(x\) are from 0 to 4. To reverse the order of integration, analyze the region over which you are integrating. **Steps to Reverse the Order:** 1. **Sketch the Region of Integration:** - The inner integral for \(y\) is from \(y = x\) to \(y = 2\). - The outer integral for \(x\) is from 0 to 4. 2. **Identify New Bounds:** - Exchange the roles of \(x\) and \(y\) to find the new limits. - \(x\) will vary between 0 and \(y\). - \(y\) will vary from 0 to 2. 3. **Write the Reversed Integral:** The double integral with the reversed order is: \[ \int_{0}^{2} \int_{0}^{y} \sin(y^3) \, dx \, dy \] This form may be more convenient for evaluation. Integrate first with respect to \(x\) followed by \(y\).
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