Finding a variable in an integral

[cherica123]

This problem just kinda came out of nowhere in our assignment and I don't have really any idea how to go about solving it.


integral{-2 to 2} (4x^3+k)dx


If someone could put me on the right path here I'd really appreciate it. Thanks!

 

[Sga001]

I believe you do it this way:

 

[galactus]

k could be any constant, from what I can see.


\(\displaystyle \L\\\int_{-2}^{2}(4x^{3}+k)dx\)

Integrate:

\(\displaystyle \L\\|_{-2}^{2}(x^{4}+kx)=((2)^{4}+2k)-((-2)^{4}+(-2)k)=4k\)

 

[pka]

Squa001
Why don’t you lean to use TeX?
Go the top of this page. Pull down Forum Help.
There are TeX help there.

 

[cherica123]

k could be any constant, from what I can see.

it may have seemed bizarre to end at 4k, but there was more to the problem that i didnt need help on, so i left it at that. sorry if that caused any confusion.

i understand it now, thanks you two!