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

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primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4Input it more clearly.

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

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0I don't have the first clue on how to use that

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Wolfram sucks these days :(

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Thats what happens with all these free awesome programs

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4Well, I don't think it even has CAS. I don't use it though.

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Well if you wanna see the steps then you gotta have membership

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4Well, I'd expect them to do that.

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Ummm this is an annoying function. @Skip2mylou426 what r u currently studying?

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Wolfram was the best matrix calculator .........

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4Think it's always been Matlab......

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

primeralph
 2 years ago
Best 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))

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4@swissgirl Yeah, if you're into coding, you'll fancy Matlab.

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1I guess he went to the lou :)

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

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

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1It always happens to me

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

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1wait let me try wolframming it for u

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

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1What course are u taking now?

primeralph
 2 years ago
Best 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.

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

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0haha 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.

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

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4dw:1372916840241:dw

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4dw:1372917002693:dw

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4.........then you start using the identities......

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

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

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0so clean it up using identities, then plug in?

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0is that a square that cuts off at the end?

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4dw:1372917328459:dw

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0thanks! think it'll be messy if I don't use identities first?

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4Well, 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,

hobbs978
 2 years ago
Best ResponseYou've already chosen the best response.0@primeralph love your picture

hobbs978
 2 years ago
Best ResponseYou've already chosen the best response.0just thought i would point that out

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4@hobbs978 Thanks. Yours too. No homo.

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0I appreciate your help!

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4You're welcome. Sorry I couldn't finish it; I'm kinda tired today.

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

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1hahaha 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

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

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4@Skip2mylou426 http://www.sosmath.com/trig/Trig5/trig5/trig5.html

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0So after plugging everything in...I come up with a big fat zero...

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1hahahahaha :D Just smile

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4Well, zero is an answer...in many cases.

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

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1372918536405:dw

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

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0dw:1372918796639:dw

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0what about the n?

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0Ok that's what I originally had. Sorry, don't hate me

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

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0I'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.

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Modern Algebra = Abstract Algebra?

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0Give or take. Our professor wrote the text for it

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4That's the sad part; when your course is customized.

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Ok that is a really hard course.

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4Well, it means you can't find the answers elsewhere......since the professor made them up.

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1hahahaha yaaaaaa My abstract algebra course was customized too

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

swissgirl
 2 years ago
Best ResponseYou've already chosen the best response.1Like most profs out there who cant teach

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

Jhannybean
 2 years ago
Best ResponseYou've already chosen the best response.0Hmm.. @satellite73 perhaps?...

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

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4Get "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.

primeralph
 2 years ago
Best ResponseYou've already chosen the best response.4........you can get them online for free.....if you know your way.........

Skip2mylou426
 2 years ago
Best ResponseYou've already chosen the best response.0I probably lack the necessary skills to do that. Can't hurt to try though

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

Jhannybean
 2 years ago
Best ResponseYou've already chosen the best response.0mathematica for free?....i hate you. I need to torrentthis.

primeralph
 2 years ago
Best 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.

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

experimentX
 2 years ago
Best 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
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