Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

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
  1. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Input it more clearly.

    • one year ago
  2. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  3. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Go Wolfram.

    • one year ago
  4. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I don't have the first clue on how to use that

    • one year ago
  5. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    http://integrals.wolfram.com/index.jsp

    • one year ago
  6. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Wolfram sucks these days :(

    • one year ago
  7. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    How?

    • one year ago
  8. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Thats what happens with all these free awesome programs

    • one year ago
  9. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Well, I don't think it even has CAS. I don't use it though.

    • one year ago
  10. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Well if you wanna see the steps then you gotta have membership

    • one year ago
  11. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Well, I'd expect them to do that.

    • one year ago
  12. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Ummm this is an annoying function. @Skip2mylou426 what r u currently studying?

    • one year ago
  13. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Wolfram was the best matrix calculator .........

    • one year ago
  14. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    was?

    • one year ago
  15. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Think it's always been Matlab......

    • one year ago
  16. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  17. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    @Skip2mylou426 I think the integral can't be evaluated easily because of the form sin(acos(b))

    • one year ago
  18. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    @swissgirl Yeah, if you're into coding, you'll fancy Matlab.

    • one year ago
  19. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    I guess he went to the lou :)

    • one year ago
  20. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I was trying to type that monstrosity into Wolfram. Epic fail. It didn't work at all.

    • one year ago
  21. doulikepiecauseidont Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    http://www.wolframalpha.com/widgets/view.jsp?id=dc816cd78d306d7bda61f6facf5f17f7 This might help too

    • one year ago
  22. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    OMG IK THAT

    • one year ago
  23. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    It always happens to me

    • one year ago
  24. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    There is no free CAS engine...........unless you can hack. Otherwise, get your pen and paper.

    • one year ago
  25. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    wait let me try wolframming it for u

    • one year ago
  26. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    A little rusty on the calculus. I haven't taken calc in 3 or 4 years unfortunately

    • one year ago
  27. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    What course are u taking now?

    • one year ago
  28. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  29. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  30. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    FUNNNNNN :)

    • one year ago
  31. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  32. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  33. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    |dw:1372916840241:dw|

    • one year ago
  34. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    |dw:1372917002693:dw|

    • one year ago
  35. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    .........then you start using the identities......

    • one year ago
  36. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Ohhhh cooollll Ya I shld have thought of cleaning it up by using identities :)

    • one year ago
  37. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Yeah, I'm sure you'd have figured it out eventually. It's just boring to look at.

    • one year ago
  38. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    so clean it up using identities, then plug in?

    • one year ago
  39. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    is that a square that cuts off at the end?

    • one year ago
  40. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Yes it is

    • one year ago
  41. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    |dw:1372917328459:dw|

    • one year ago
  42. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks! think it'll be messy if I don't use identities first?

    • one year ago
  43. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  44. hobbs978 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    @primeralph love your picture

    • one year ago
  45. hobbs978 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    just thought i would point that out

    • one year ago
  46. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    @hobbs978 Thanks. Yours too. No homo.

    • one year ago
  47. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I appreciate your help!

    • one year ago
  48. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    You're welcome. Sorry I couldn't finish it; I'm kinda tired today.

    • one year ago
  49. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    It's ok, I wish I even remembered how to start it. I feel like a failure.

    • one year ago
  50. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  51. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  52. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    @Skip2mylou426 http://www.sosmath.com/trig/Trig5/trig5/trig5.html

    • one year ago
  53. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    So after plugging everything in...I come up with a big fat zero...

    • one year ago
  54. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    hahahahaha :D Just smile

    • one year ago
  55. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Well, zero is an answer...in many cases.

    • one year ago
  56. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I may have made a mistake. ugh. ok I'm going to attempt to draw this.. hold on

    • one year ago
  57. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1372918536405:dw|

    • one year ago
  58. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ok so the \[\cos(0)^3\] is going to be equal to one and then I end up with..

    • one year ago
  59. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    0

    • one year ago
  60. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    |dw:1372918796639:dw|

    • one year ago
  61. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    what about the n?

    • one year ago
  62. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Still 0

    • one year ago
  63. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok that's what I originally had. Sorry, don't hate me

    • one year ago
  64. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    No, I don't hate you. Stop bringing yourself down. Sure you're an awesome student.

    • one year ago
  65. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  66. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Modern Algebra = Abstract Algebra?

    • one year ago
  67. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Give or take. Our professor wrote the text for it

    • one year ago
  68. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    That's the sad part; when your course is customized.

    • one year ago
  69. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Ok that is a really hard course.

    • one year ago
  70. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Why is that sad?

    • one year ago
  71. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Well, it means you can't find the answers elsewhere......since the professor made them up.

    • one year ago
  72. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    hahahaha yaaaaaa My abstract algebra course was customized too

    • one year ago
  73. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Almost our whole department is like that. The worst thing is that the majority of our professors are research-based and suck at teaching.

    • one year ago
  74. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Like most profs out there who cant teach

    • one year ago
  75. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  76. Jhannybean Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Exactly...

    • one year ago
  77. Jhannybean Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    Hmm.. @satellite73 perhaps?...

    • one year ago
  78. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  79. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  80. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    ........you can get them online for free.....if you know your way.........

    • one year ago
  81. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I probably lack the necessary skills to do that. Can't hurt to try though

    • one year ago
  82. swissgirl Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    Ya I only do free stuff. I got mathematica for free and all my textbooks in pdf formats

    • one year ago
  83. Jhannybean Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    mathematica for free?....i hate you. I need to torrentthis.

    • one year ago
  84. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    @Skip2mylou426 The first book explains quite well. I've used it for HS students, so it should be cool.

    • one year ago
  85. Skip2mylou426 Group Title
    Best Response
    You've already chosen the best response.
    Medals 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
  86. primeralph Group Title
    Best Response
    You've already chosen the best response.
    Medals 4

    Stay safe.

    • one year ago
  87. experimentX Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    \[ \frac{2 (1)_{n-1}}{\pi \left( \frac 3 2\right)_{n-1} }\] http://mathworld.wolfram.com/PochhammerSymbol.html

    • one year ago
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.