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Math Help - A new calculus puzzler for you

  1. #1
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    A new calculus puzzler for you

    \int(1 + sin^2x)^{1/2}dx
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  2. #2
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    E(x|m) = \int(1 - m~sin^2x)^{1/2}dx is an elliptic integral. In this case m = -1. So there shouldn't be a closed form for this one?

    -Dan
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  3. #3
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    Want to be sure

    Quote Originally Posted by topsquark View Post
    E(x|m) = \int(1 - m~sin^2x)^{1/2}dx is an elliptic integral. In this case m = -1. So there shouldn't be a closed form for this one?

    -Dan
    Just to be sure, if m were -1, would that imply the equation can be solved in closed form?
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    Quote Originally Posted by wonderboy1953 View Post
    ...
    What was your solution?
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    Quote Originally Posted by TheCoffeeMachine View Post
    What was your solution?
    Don't have one which is why I posted in the puzzle section
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    Quote Originally Posted by wonderboy1953 View Post
    Don't have one which is why I posted in the puzzle section
    So you had \int \sqrt{1+\sin^2{x}}\;{dx} which you couldn't do!
    To get help with it you posted it in the puzzles section.
    Why? Wasn't that the purpose of the calculus forum?
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  7. #7
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    Quote Originally Posted by TheCoffeeMachine View Post
    So you had \int \sqrt{1+\sin^2{x}}\;{dx} which you couldn't do!
    To get help with it you posted it in the puzzles section.
    Why? Wasn't that the purpose of the calculus forum?
    I don't attend school. I post items that potentially would be interesting. I like to keep my mind sharp by coming to MHF.

    I'm not necessarily looking for help, just good conversation. It's easy to come up with puzzles with interesting answers and solutions (as I've already posted on other threads), and others that may have no (closed) solutions as the one I just posted.

    Keep in mind I'm a math explorer and will delve into areas that I may not be totally familiar with. You have the option of passing up on my threads and find more worthwhile ones for you.
    Last edited by wonderboy1953; February 1st 2011 at 01:53 PM. Reason: spelling
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    Forum Admin topsquark's Avatar
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    Quote Originally Posted by wonderboy1953 View Post
    I don't attend school. I post items that potentially would be interesting. I like to keep my mind sharp by coming to MHF.

    I'm not necessarily looking for help, just good conversation. It's easy to come up with puzzles with interesting answers and solutions (as I've already posted on other threads), and others that may have no (closed) solutions as the one I just posted.

    Keep in mind I'm a math explorer and will delve into areas that I may not be totally familiar with. You have the option of passing up on my threads and find more worthwhile ones for you.
    You know I had a Statistical Mechanics professor that once gave us an "extra credit" problem that couldn't be solved. I am feeling very much the same way to wonderboy53 as I was with him at the time.

    This wasn't a "puzzle" it was merely an unsolved problem. I was looking forward to seeing the solution to this problem, dangit. Please post your problems in the correct forum. That or at least have the courtesy of telling us that you don't know how to solve it.

    -Dan
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  9. #9
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    Quote Originally Posted by wonderboy1953 View Post
    I don't attend school. I post items that potentially would be interesting. I like to keep my mind sharp by coming to MHF.

    I'm not necessarily looking for help, just good conversation. It's easy to come up with puzzles with interesting answers and solutions (as I've already posted on other threads), and others that may have no (closed) solutions as the one I just posted.

    Keep in mind I'm a math explorer and will delve into areas that I may not be totally familiar with. You have the option of passing up on my threads and find more worthwhile ones for you.
    The question you posted may have been a 'puzzle for conversation' in your mind but to most other members there is a clear implication that you had a solution. The fact that you don't have a solution means that potentially many members will feel deceived. In light of what you have said, the question clearly should have been posted in the Calculus subforum.

    Thread closed.
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