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Skip2mylou426
Group Title
Find the integral of (cos^2(x))((cosxsin^2n+1)*(pi/2*sinx)+(sinxsin^2n+1)(pi/2*cosx)) from 0 to pi/2
 one year ago
 one year ago
Skip2mylou426 Group Title
Find the integral of (cos^2(x))((cosxsin^2n+1)*(pi/2*sinx)+(sinxsin^2n+1)(pi/2*cosx)) from 0 to pi/2
 one year ago
 one year ago

This Question is Closed

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Input it more clearly.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
\[\int\limits_{0}^{\pi/2}\cos ^{2}x(\cos x \sin ^{2n+1}(\frac{ \pi }{ 2 }sinx)+sinxsin ^{2n+1}(\frac{ \pi }{ 2 }cosx))dx\]
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Go Wolfram.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
I don't have the first clue on how to use that
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
http://integrals.wolfram.com/index.jsp
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Wolfram sucks these days :(
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Thats what happens with all these free awesome programs
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Well, I don't think it even has CAS. I don't use it though.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Well if you wanna see the steps then you gotta have membership
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Well, I'd expect them to do that.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Ummm this is an annoying function. @Skip2mylou426 what r u currently studying?
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Wolfram was the best matrix calculator .........
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Think it's always been Matlab......
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Welll ya Dont have matlab. I used to have mathematica but my comp broke down so dont have it no more :(
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
@Skip2mylou426 I think the integral can't be evaluated easily because of the form sin(acos(b))
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
@swissgirl Yeah, if you're into coding, you'll fancy Matlab.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
I guess he went to the lou :)
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
I was trying to type that monstrosity into Wolfram. Epic fail. It didn't work at all.
 one year ago

doulikepiecauseidont Group TitleBest ResponseYou've already chosen the best response.0
http://www.wolframalpha.com/widgets/view.jsp?id=dc816cd78d306d7bda61f6facf5f17f7 This might help too
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
OMG IK THAT
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
It always happens to me
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
There is no free CAS engine...........unless you can hack. Otherwise, get your pen and paper.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
wait let me try wolframming it for u
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
A little rusty on the calculus. I haven't taken calc in 3 or 4 years unfortunately
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
What course are u taking now?
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
@swissgirl No point. The integrand has the form of a switch variable 'n' which would leave the answer not numeric, but algebraic........which requires a CAS software.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
It's called Problem Solving. It's a combination of every type of math course that could've possibly been taken.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
FUNNNNNN :)
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
haha not quite. He only gives us 1 point per problem solved. All work is required and 500 points are needed to get an A. Class has one month left (halfway done) and I have 178 points right now. KILL ME.
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
I don't see the point in putting that into an integral. The integrand can be simplified though....it just looks ugly.
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
dw:1372916840241:dw
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
dw:1372917002693:dw
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
.........then you start using the identities......
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Ohhhh cooollll Ya I shld have thought of cleaning it up by using identities :)
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Yeah, I'm sure you'd have figured it out eventually. It's just boring to look at.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
so clean it up using identities, then plug in?
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
is that a square that cuts off at the end?
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Yes it is
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
dw:1372917328459:dw
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
thanks! think it'll be messy if I don't use identities first?
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Well, depending on how much math you know, yes and no. You might be able to notice the symmetry; and if you can't fiddle with it,
 one year ago

hobbs978 Group TitleBest ResponseYou've already chosen the best response.0
@primeralph love your picture
 one year ago

hobbs978 Group TitleBest ResponseYou've already chosen the best response.0
just thought i would point that out
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
@hobbs978 Thanks. Yours too. No homo.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
I appreciate your help!
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
You're welcome. Sorry I couldn't finish it; I'm kinda tired today.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
It's ok, I wish I even remembered how to start it. I feel like a failure.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
hahaha dont feel like one I took 2 semesters of stats earlier this yr and I cant remember pellet Yesterday I was looking at a question and was totally blank. I felt like the biggest failure
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
It's funny how the system changes your words by itself. We know what you meant to type instead of "pellet"........
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
@Skip2mylou426 http://www.sosmath.com/trig/Trig5/trig5/trig5.html
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
So after plugging everything in...I come up with a big fat zero...
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
hahahahaha :D Just smile
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Well, zero is an answer...in many cases.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
I may have made a mistake. ugh. ok I'm going to attempt to draw this.. hold on
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
dw:1372918536405:dw
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
ok so the \[\cos(0)^3\] is going to be equal to one and then I end up with..
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
dw:1372918796639:dw
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
what about the n?
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Still 0
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
Ok that's what I originally had. Sorry, don't hate me
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
No, I don't hate you. Stop bringing yourself down. Sure you're an awesome student.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
I'm trying, I really am, but this class is insanely hard. The hardest class in our program is Modern Algebra (which I took last semester), and I thought that was easier than this. I'm at a loss. I don't know what to do.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Modern Algebra = Abstract Algebra?
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
Give or take. Our professor wrote the text for it
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
That's the sad part; when your course is customized.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Ok that is a really hard course.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Why is that sad?
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Well, it means you can't find the answers elsewhere......since the professor made them up.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
hahahaha yaaaaaa My abstract algebra course was customized too
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
Almost our whole department is like that. The worst thing is that the majority of our professors are researchbased and suck at teaching.
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Like most profs out there who cant teach
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
I learned a long time ago to never expect a professor to teach well. I just get the syllabus and do my thing.
 one year ago

Jhannybean Group TitleBest ResponseYou've already chosen the best response.0
Exactly...
 one year ago

Jhannybean Group TitleBest ResponseYou've already chosen the best response.0
Hmm.. @satellite73 perhaps?...
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
that's the issue with this class, he just gives you a bunch of problems with no material to work with
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Get "Engineering Math by KA Stroud" Then go to "Advanced Engineering Math" by anybody.......but Kreyszig........that'll be later because it doesn't explain easy.
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
........you can get them online for free.....if you know your way.........
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
I probably lack the necessary skills to do that. Can't hurt to try though
 one year ago

swissgirl Group TitleBest ResponseYou've already chosen the best response.1
Ya I only do free stuff. I got mathematica for free and all my textbooks in pdf formats
 one year ago

Jhannybean Group TitleBest ResponseYou've already chosen the best response.0
mathematica for free?....i hate you. I need to torrentthis.
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
@Skip2mylou426 The first book explains quite well. I've used it for HS students, so it should be cool.
 one year ago

Skip2mylou426 Group TitleBest ResponseYou've already chosen the best response.0
I'll have to check it out soon. Thanks again for your help, I think I'm going to go die now :)
 one year ago

primeralph Group TitleBest ResponseYou've already chosen the best response.4
Stay safe.
 one year ago

experimentX Group TitleBest ResponseYou've already chosen the best response.0
\[ \frac{2 (1)_{n1}}{\pi \left( \frac 3 2\right)_{n1} }\] http://mathworld.wolfram.com/PochhammerSymbol.html
 one year ago
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