Math question: Integrals - DiscussWorldIssues - Socio-Economic Religion and Political Uncensored Debate

**denyffishh** · 01-18-2008, 07:43 PM

Feel free to use any computer algebra system. Integration is solved problem.

**D6Ri5u13** · 01-18-2008, 08:43 PM

substitution, partials,who knows. I'd have to look in a book.

**occalmnab** · 01-18-2008, 08:50 PM

lans and arctans?
that's disgusting *ugh*

**Falik** · 01-25-2008, 08:02 AM

I assume you're having problems with arctan? It's pretty easy. Just use the composition rule. For instance:

d/dx (tan o arctan(x))= d/dx x = 1

Thus,

(d/dx arctan(x))(d/dx' tan(x'=arctan(x)))=1

Therefore:

d/dx arctan(x) = 1/(1+x^2)

**HedoShoodovex** · 01-25-2008, 04:51 PM

the answer is 7

01-18-2008, 07:43 PM	#1
denyffishh Join Date Oct 2005 Posts 443 Senior Member	Math question: Integrals Feel free to use any computer algebra system. Integration is solved problem. Share Share this post on Digg Del.icio.us Technorati Twitter
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01-18-2008, 08:43 PM	#2
D6Ri5u13 Join Date Oct 2005 Posts 561 Senior Member	substitution, partials,who knows. I'd have to look in a book. Share Share this post on Digg Del.icio.us Technorati Twitter
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01-18-2008, 08:50 PM	#3
occalmnab Join Date Oct 2005 Posts 441 Senior Member	lans and arctans? that's disgusting ugh Share Share this post on Digg Del.icio.us Technorati Twitter
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01-25-2008, 08:02 AM	#4
Falik Join Date Oct 2005 Posts 518 Senior Member	I assume you're having problems with arctan? It's pretty easy. Just use the composition rule. For instance: d/dx (tan o arctan(x))= d/dx x = 1 Thus, (d/dx arctan(x))(d/dx' tan(x'=arctan(x)))=1 Therefore: d/dx arctan(x) = 1/(1+x^2) Share Share this post on Digg Del.icio.us Technorati Twitter
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01-25-2008, 04:51 PM	#5
HedoShoodovex Join Date Oct 2005 Posts 492 Senior Member	the answer is 7 Share Share this post on Digg Del.icio.us Technorati Twitter
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