Double Integration Homework: Changing Limits

  • Thread starter jaus tail
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In summary, the conversation is discussing a graph with limits y = 0 to y = x - 2 and x = 2 to x = infinite. By changing the limits to x = y + 2 to x = infinite and y = 0 to y = infinite, the right side graph is obtained. However, this option is not listed in the choices and the question is odd for not changing the order of dxdy. The expert agrees that the solution appears to be correct and there may be an error in the question.
  • #1
jaus tail
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Homework Statement


upload_2018-1-5_16-38-20.png


Homework Equations


I've drawn graph below.

The Attempt at a Solution


Currently their limits are y = 0 to y = x - 2 vertical arrow
and x = 2 to x = infinite. horizontal arrow
upload_2018-1-5_16-38-2.png

Changing limits i get right side graph.
x = y + 2 to x = infinite horizontal arrow
y = 0 to y = infinite vertical arrow
But that is not even there in options. Am i wrong somewhere?
 

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  • #2
jaus tail said:
Changing limits i get right side graph.
x = y + 2 to x = infinite horizontal arrow
y = 0 to y = infinite vertical arrow
But that is not even there in options. Am i wrong somewhere?

What you have done looks right to me. The question is also odd in that they haven't changed the order of ##dxdy##.
 
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Thanks.
 

Related to Double Integration Homework: Changing Limits

1. What is double integration?

Double integration is a mathematical technique used to find the area under a 3-dimensional surface. It involves finding the integral of a function with two variables, by integrating one variable at a time.

2. Why do we need to change the limits in double integration?

Changing the limits in double integration allows us to calculate the area under a curved surface that is bounded by different boundaries. It gives us the flexibility to integrate over a specific region rather than the entire surface.

3. How do we change the limits in double integration?

To change the limits in double integration, we need to first identify the new boundaries of the region we want to integrate over. Then, we can substitute these new limits into the integral and solve for the area.

4. What are the benefits of using double integration to find area?

Double integration allows us to find the area under a curved surface, which cannot be easily calculated using traditional methods. It also gives us a more accurate result compared to approximations, making it useful in many scientific and engineering applications.

5. Can double integration be used for other purposes besides finding area?

Yes, double integration can also be used for other purposes such as finding volume, center of mass, and moments of inertia. It is a versatile mathematical tool that can be applied in various fields of study.

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