Can a Simple Integral Solve 1/(K + x^2)^(3/2)?

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In summary, the purpose of integrating 1/(K + x^2)^(3/2) is to find the area under the curve of the function and it can be applied in various real-life situations. The process involves using trigonometric substitutions or partial fraction decomposition and the limits of integration depend on the specific problem. 1/(K + x^2)^(3/2) cannot be integrated using basic rules and is commonly used in fields such as physics, engineering, and mathematics.
  • #1
Mattofix
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A simple integral?!?

Homework Statement



Integrate 1/(K+ x^2)^(3/2) dx

Homework Equations





The Attempt at a Solution



substitution of some kind - if it had an x on top it would be fine...
 
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  • #2
Set [tex]x=\sqrt{K}Sinh(u)[/tex] and proceed.
 
  • #3
arildno loves that hyperbolic substitution!

Myself, I would have immediately thought that "[itex]tan^2(\theta)+ 1= sec^2(\theta)[/itex]" and used the substitution [itex]x= \sqrt{K}tan(\theta)[/itex]. I suspect it is just a matter of taste.
 

FAQ: Can a Simple Integral Solve 1/(K + x^2)^(3/2)?

What is the purpose of integrating 1/(K + x^2)^(3/2)?

The purpose of integrating 1/(K + x^2)^(3/2) is to find the area under the curve of the function 1/(K + x^2)^(3/2). This can be useful in various applications, such as calculating the work done by a force or finding the center of mass of an object.

What is the process for integrating 1/(K + x^2)^(3/2)?

The process for integrating 1/(K + x^2)^(3/2) involves using trigonometric substitutions or partial fraction decomposition. This will transform the integral into a more manageable form that can be integrated using standard techniques.

What are the limits of integration when integrating 1/(K + x^2)^(3/2)?

The limits of integration for 1/(K + x^2)^(3/2) depend on the specific problem at hand. In general, the limits will be the values of x that correspond to the beginning and end of the region under the curve that is being integrated.

Can 1/(K + x^2)^(3/2) be integrated using basic integration rules?

No, 1/(K + x^2)^(3/2) cannot be integrated using basic integration rules. As mentioned before, it requires the use of more advanced techniques such as trigonometric substitutions or partial fraction decomposition.

What are some real-life applications of integrating 1/(K + x^2)^(3/2)?

Integrating 1/(K + x^2)^(3/2) has various real-life applications, such as calculating the work done by a force, finding the center of mass of an object, or determining the position of an object under the influence of a force. It is also used in fields such as physics, engineering, and mathematics to solve various problems involving force, motion, and energy.

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