Double Integration Check: Evaluating a Double Integral for a Triangle

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In summary, for the given integral over a triangle with vertices at (0,0), (1,1), and (-1,1), integrating first with respect to x and then with respect to y using the given limits will produce the correct answer.
  • #1
tomeatworld
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More of a check

Homework Statement


Evaluate [tex]\int\int (x^{2}(y+1) + e^{y})[/tex] for a triangle with vertices at (0,0) (1,1) (-1,1)


Homework Equations


Integration

The Attempt at a Solution


The only this I wanted to check, is that integrating the square at y=0 to 1 and x=0 to 1 will give the correct answer (as the triangle is reflected on the y axis) and if not, how you get the limits.
 
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  • #2
I don't see how "integrating the square at y = 0 to 1 and x = 0 to 1" relates to this problem, even if it happens to produce the right answer.

If you integrate first with respect to x and then with respect to y, your limits of integration will be x = - y to x = y, and then y = 0 to y = 1.
 

1. What is double integration check?

Double integration check is a mathematical process used to determine the accuracy of a calculated value by comparing it to a known or expected value. It involves performing two rounds of integration on a set of data to check for consistency and to reduce the effects of random errors.

2. Why is double integration check important?

Double integration check is important because it helps ensure the accuracy and reliability of experimental data. By comparing the calculated value with a known value, it can identify any errors or inconsistencies in the data, allowing for adjustments to be made and improving the overall quality of the results.

3. When should double integration check be used?

Double integration check should be used whenever there is a need to verify the accuracy of a calculated value. It is commonly used in scientific experiments and engineering calculations, but can also be applied in other fields where precise measurement and data analysis are required.

4. How is double integration check performed?

To perform a double integration check, the data is first integrated twice using different methods or starting points. The two results are then compared and any discrepancies are noted. If the values are consistent, it can be concluded that the data is accurate. If there are significant differences, further investigation and adjustments may be necessary.

5. What are the limitations of double integration check?

Double integration check is not a foolproof method and has some limitations. It assumes that the data is accurate and any errors are due to random fluctuations. It may also be affected by systematic errors or biases in the data. Additionally, it may not be suitable for highly complex data sets or systems with nonlinear relationships.

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