Integrating sqr(x^2-1) w/o Sec Substitution?

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In summary, integrating sqr(x^2-1) without using Sec Substitution is a useful technique for finding the indefinite integral of a function. The general process involves identifying trigonometric identities and making a substitution to simplify the function. It can provide benefits such as simplifying integrals and improving problem-solving skills, but it also has limitations and may not always be the most efficient method.
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physicsjock
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Is there a way to do this integral without substituting in sec?

int sqr(x^2-1)


Ive tried a bunch of things, but the only thing that works is using sec,

Is there any other method?
 
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  • #2
physicsjock said:
Is there a way to do this integral without substituting in sec?

int sqr(x^2-1)


Ive tried a bunch of things, but the only thing that works is using sec,

Is there any other method?
What's the problem with letting x = sec(θ) ?

Well, you can alternatively use the substitution: x = cosh(t) → dx = sinh(t) dt .
 

FAQ: Integrating sqr(x^2-1) w/o Sec Substitution?

What is the purpose of integrating sqr(x^2-1) without using Sec Substitution?

The purpose of integrating sqr(x^2-1) without using Sec Substitution is to find the indefinite integral of the given function. This technique can be useful in simplifying complex integrals and making them easier to solve.

What is the general process for integrating sqr(x^2-1) without using Sec Substitution?

The general process for integrating sqr(x^2-1) without using Sec Substitution is to first identify any trigonometric identities that can be used to simplify the function. Then, make a substitution to transform the function into a simpler form, which can be integrated using basic integration rules.

Can you provide an example of integrating sqr(x^2-1) without using Sec Substitution?

Yes, an example of integrating sqr(x^2-1) without using Sec Substitution is: ∫sqr(x^2-1)dx. First, we can use the identity sin^2x + cos^2x = 1 to rewrite the function as ∫sin^2(x)dx. Then, we can make the substitution u = cos(x) to transform the function into ∫(1-u^2)du, which can be integrated using basic integration rules.

What are the benefits of integrating sqr(x^2-1) without using Sec Substitution?

Integrating sqr(x^2-1) without using Sec Substitution can provide several benefits, such as simplifying complex integrals, saving time, and improving problem-solving skills. It can also help in understanding the concepts of integration and trigonometric identities better.

Are there any limitations to integrating sqr(x^2-1) without using Sec Substitution?

Yes, there are limitations to integrating sqr(x^2-1) without using Sec Substitution. This method may not work for all integrals involving trigonometric functions, and it may not always provide the most efficient solution. In some cases, using other integration techniques may be more suitable.

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