Triple integral volume of solid (set up)

In summary, a triple integral is a type of mathematical integration used to calculate the volume of a solid in three-dimensional space. It is set up using the formula ∫∫∫ f(x,y,z) dV, with limits of integration determined by the boundaries of the region. Its purpose is to calculate the volume of irregularly shaped objects, and it has applications in physics, engineering, and computer graphics. Techniques for solving triple integrals include cylindrical and spherical coordinates, symmetry, and numerical methods.
  • #1
whynot314
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Homework Statement


I need help setting this integral up in spherical coordinates, the region above the xyplane, inside the sphere x^2+y^2+z^2=2 and outside the cylinder x^2+y^2=2





The Attempt at a Solution




[itex]\int^{2\pi}_{0}[/itex] [itex]\int^{\pi/2}_{\pi/4}[/itex] [itex]\int^{\sqrt{2}}_{0}[/itex] [itex]\rho^{2}[/itex]sin[itex]\phi[/itex]d[itex]\rho[/itex]d[itex]\theta[/itex]d[itex]\theta[/itex] -[itex]\int^{2\pi}_{0}[/itex] [itex]\int^{\pi/4}_{0}[/itex] [itex]\int^{1/sin\phi}_{0}[/itex] [itex]\rho^{2}[/itex]sin[itex]\phi[/itex]d[itex]\rho[/itex]d[itex]\phi[/itex]d[itex]\theta[/itex]

is this correct?
 
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  • #2
cylinder is x^2+y^2=1 oops, and on first integrand its drho,dphi,dtheta.
 

What is a triple integral?

A triple integral is a type of mathematical integration that is used to calculate the volume of a solid in three-dimensional space. It involves integrating a function over a three-dimensional region.

How is a triple integral set up?

A triple integral is typically set up using the formula ∫∫∫ f(x,y,z) dV, where f(x,y,z) is the function being integrated and dV represents an infinitesimal volume element. The limits of integration for each variable (x, y, and z) are determined based on the boundaries of the region being integrated.

What is the purpose of using a triple integral to calculate volume?

A triple integral allows us to calculate the volume of irregularly shaped objects in three-dimensional space. It is especially useful in situations where the shape of the object cannot be easily described using basic geometric shapes.

What are some applications of triple integrals?

Triple integrals have many applications in fields such as physics, engineering, and computer graphics. They are commonly used to calculate the mass, center of mass, and moment of inertia of three-dimensional objects. They are also used in fluid dynamics, where they can be used to calculate the flow rate of a fluid through a given space.

What are some techniques for solving triple integrals?

There are various techniques for solving triple integrals, including the use of cylindrical and spherical coordinates, as well as the use of symmetry to simplify the integrand. Additionally, numerical methods such as Monte Carlo integration can be used to approximate the value of a triple integral.

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