Finding bounds of triple integral

In summary, finding the bounds of a triple integral is crucial for solving multi-dimensional integrals and determining the limits of integration and the region of space or volume where the integral is being evaluated. The bounds are determined by identifying the limits of integration for each variable, usually through visualizing the region in three-dimensional space. There are various methods for finding the bounds, including graphs, geometric reasoning, and coordinate transformations. Common mistakes include forgetting boundaries, using the wrong coordinate system, and not setting up the integrand correctly. The bounds can be negative if the region extends into negative coordinates. It is important to consider the direction and orientation of the integral when determining the bounds.
  • #1
Larrytsai
228
0

Homework Statement


Evaluate the triple integral of the function (x+5y)dV Where E is bounded by a parabolic cylinder and the planes z=9x z=0 y=18x and y=3x^2


I just wanted to knw if my bounds are correct.
Here they are

for dz:
0 to 9x

dy:

18x to 3x^2

dx:

0 to 6
 
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  • #2
Your limits for y are backwards, but otherwise everything looks okay.
 

1. What is the purpose of finding bounds of a triple integral?

Finding the bounds of a triple integral is important in solving multi-dimensional integrals, particularly in physics and engineering applications. It helps determine the limits of integration and the region of space or volume where the integral is being evaluated.

2. How do you determine the bounds of a triple integral?

The bounds of a triple integral are determined by identifying the limits of integration for each variable. This is usually done by visualizing the region of integration in three-dimensional space and determining the boundaries of the region along the x, y, and z axes.

3. What are the different methods for finding the bounds of a triple integral?

There are several methods for finding the bounds of a triple integral, including the use of graphs and visualizations, geometric reasoning, and coordinate transformations. Each method may be more suitable for different types of integrals and regions of integration.

4. What are some common mistakes when finding the bounds of a triple integral?

Some common mistakes when finding the bounds of a triple integral include forgetting to account for all boundaries of the region of integration, using the wrong coordinate system, and not properly setting up the integrand. It is important to carefully consider the problem and double check the bounds before solving the integral.

5. Can the bounds of a triple integral be negative?

Yes, the bounds of a triple integral can be negative. This may occur when the region of integration extends into negative coordinates, such as in a three-dimensional space with both positive and negative axes. It is important to consider the orientation and direction of the integral when determining the bounds.

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