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Calc Question

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zerospinskier
Posts: 4867 - Karma: 350

I can't remember how to do this? I know it's kinda hard to explain online, but if someone can remind me how, that'd be sick.

(integral of)  1 /  (x^2)    dx

Nov 8 2007 2:25AM
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JockinJLoads
Posts: 3480 - Karma: 6
http://wims.unice.fr/wims/en_tool~analysis~function.en.html
Nov 8 2007 2:37AM
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JockinJLoads
Posts: 3480 - Karma: 6
-(1/x) + C
Nov 8 2007 2:37AM
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zerospinskier
Posts: 4867 - Karma: 350

O yeah, that's right. But I still need to show my work. I am trying u substitution where u=x^2 but it just doesn't work out. What do I need to do?

Nov 8 2007 2:48AM
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zerospinskier
Posts: 4867 - Karma: 350

O shit I got it

Nov 8 2007 2:50AM
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user098123
Posts: 6072 - Karma: 18
For those of you who don't know how to do it, change it from 1/x^2 to x^-2, then integrate like regular, put it to the -1 and divide by -1, so it is (x^-1)/-1, or simply -1/x + C, your arbitrary constant, which isn't necessary if you have limits to integrate over.
Nov 8 2007 8:39AM
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*DrewT*
Posts: 7768 - Karma: 481
-2 / (x^3)

yay!
Nov 8 2007 1:32PM
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