Posted: 3/5/2006 1:59:02 PM EDT
[Last Edit: 3/5/2006 4:01:13 PM EDT by JL7]


"I am in a world of shit"

87 ?



Nope, That's incorrect. You need to use Trigonometric substution for that integral.



Doing calculus isn't like riding a bike. You do forget if you don't use it. Sorry, I might have been able to help you 10 years ago when I was in college, but today I'm lost.
Do you have access to something like matlab? I bet it could help. 

NRA Life member.
Careful with that axe, Eugene. 
i did i sepperated into cos^2sin^2sinx and then used sin^2+cos^2 = 1, then u substitution
u = cosx 

"I am in a world of shit"

Sorry, once we studied Pi, my life took a hole new direction...


What is the Law ? Law no MORE !

Too hard for me.
Why don't you try taking the derivative of the right side of your equation? 

http://www.reddawn.net

Your method and answer are correct.



I thought this was a math question, all I see is GREEK.


Women are not laying in the tub right now letting the water hit the pink parts dreaming about a gun nut who's playing Rainbow Six in his mom's basement. You follow?

ETA..DrCaligari1 I'm pretty sure you weren't replying to TheRegulator, but it fit so perfectly, I couldn't resist. 

Save your breath.......you're going to need it to blowup your date.




Yes, u use u substitution knowing the relation of cos and sin. 


did you work the problem anyway thanks i hope your right 

"I am in a world of shit"

you could use { 

"I am in a world of shit"

Yes, I worked the problem. I also checked my calc. book and found a virtually identical example (odd power of sine, even power of cosine).



Yep, He's right. Just worked the problem. I can post the worked out solution if you want. 


no need if i got the right answer. thank you both


"I am in a world of shit"

If you have a TI83, or something similar, just graph your answer and the derivative of your answer (or the other way around). If they seem to be the same function, you're probably right. It's not particularly rigorous, but it works in the general case.



I hear voices......And they don't like you.

My preference is egyptian  all the pretty pictures of animals and such. 


"I am in a world of shit"

btt


"I am in a world of shit"

+1 Especially if it was Calc II Differential Equations was easier for me 

Romans 16:20
The God of peace will soon crush Satan under your feet. The grace of our Lord Jesus be with you. .... excellent <img src=/images/smilies/icon_smile_approve.gif border=0 align=middle> 
it is calc 2
matlab and mathcad both, but they dont show you how to work the problem. And they dont always give the answer im looking for. Kinda like the TI89 

"I am in a world of shit"

WTF man....you need a linguist......THATS GREEK!!!!!
Errrr: nice AZK9 


anyone


"I am in a world of shit"

I would solve both of these with partial fractions. (A) requries partial fractions, but (B) can be solved by logirithmic integration, where u=x^26x+5 and du=2x6 . The derivative of ln(u) is 1/u and the integral of du/u is ln(u) notice in B that the deravitive of the denominator is 2x6. this only varies from the numerator by a constant of 2. Set up the problem as 1/2* (du/u) and integrate. You will get 1/2ln(u). Subs in u=x^26x+5 and you will get 1/2[ln(x^26x+5)]. You'll see that when you learn partial fractions that it is a much easier way to solve these. 


Oh Puhleeze...you can solve this through several iterations of Integration by Parts...



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