- #1

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## Homework Statement

The integral from -infinity to infinity of (2-x^4)dv

## Homework Equations

U substitution

## The Attempt at a Solution

Dont know what to use as my "u" ?

Can someone please help me out? Thank you in advance.

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- Thread starter Mathematics07
- Start date

- #1

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The integral from -infinity to infinity of (2-x^4)dv

U substitution

Dont know what to use as my "u" ?

Can someone please help me out? Thank you in advance.

- #2

- 537

- 3

[tex]\int_{-\infty}^\infty (2-x^4) \,dx [/tex]

If so, you do not need u-substitution here. Also, to compute an improper integral of this form you need to evaluate:

[tex]\lim_{s\to\infty} \int_{-s}^s (2-x^4) \,dx [/tex]

- #3

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- #4

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[tex]\int_{-\infty}^\infty (2-x^4) \,dx [/tex]

If so, you do not need u-substitution here. Also, to compute an improper integral of this form you need to evaluate:

[tex]\lim_{s\to\infty} \int_{-s}^s (2-x^4) \,dx [/tex]

so for an example like this you would just do a regular anti derivative and then substitute your "s" in for the infinities and then evaluate >?

-Jay J-

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