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  1. #1
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    Quick Question...

    Q:
    Attached Thumbnails Attached Thumbnails Quick Question...-24.gif  
    Last edited by qbkr21; May 22nd 2007 at 11:42 AM.
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  2. #2
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    f(x) = (1+x)^2 with b=3

    Thus,

    \int_0^3 (1+x)^2 dx
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  3. #3
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by qbkr21 View Post
    Q:
    Your objective is to find the integral correct.

    Now i happen to find doing things like these and Riemann sums and the Simpson's and Midpoint rules hopelessly annoying. I have somewhat purposed in my heart to forget how to do them, so what i say may not be 100% correct, but you can verify what i say with your text.

    \int_0^b f(x) dx
    = \int_0^3 f(x) dx
     = \int_0^3 (1 + x)^2 dx
    = \lim_{n \rightarrow \infty} [f(x_{1}) \triangle x + f(x_{2}) \triangle x + ... + f(x_{n}) \triangle x]
    = \lim_{n \rightarrow \infty} \sum_{i = 1}^{\infty} f(x_{i}) \triangle x
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  4. #4
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    Instead of typing
    \lim_{x \rightarrow \infty}

    Type,
    \lim_{x\to \infty}

    This is Mine 58th Post!!!
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  5. #5
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by ThePerfectHacker View Post
    Instead of typing
    \lim_{x \rightarrow \infty}

    Type,
    \lim_{x\to \infty}

    This is Mine 58th Post!!!
    thanks for the tip. what about the way i did the summation symbol, is there a more efficient way to type that?

    Congrats on the 58 posts by the way
    Last edited by Jhevon; May 22nd 2007 at 01:25 PM.
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