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Math Help - \lim{} weirdness and \norm{} disfunctional

  1. #1
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    Question \lim{} weirdness and \norm{} disfunctional

    I just posted and found something weird. The 'limit' tag worked in preview, but then in post it changed the "h -> 0" to a subscript - not an underscript, namely: \lim_{h\rightarrow0}

    The 'norm' tag does not work, so I used double vertical bars ||\vec{x}||.
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  2. #2
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    Quote Originally Posted by livingdog View Post
    I just posted and found something weird. The 'limit' tag worked in preview, but then in post it changed the "h -> 0" to a subscript - not an underscript, namely: \lim_{h\rightarrow0}

    The 'norm' tag does not work, so I used double vertical bars ||\vec{x}||.
    To get \displaystyle{\lim_{h \to 0} you have to use the \displaystyle command.
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  3. #3
    A Plied Mathematician
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    For me, even in the preview, I get subscripts for limits, not underscripts like I'd prefer.
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  4. #4
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    For the norm, use \| (backslash vertical bar) to get \|.
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  5. #5
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    [I] the limit: (from The Art Of Problem Solving)

    "That summation symbol is a little ugly. We can make it prettier by using the \displaystyle:" (edited for this thread)

    <br />
\displaystyle\lim_{h\rightarrow0}\frac{1}{h} \neq 0<br />


    [II] the norm:

    backslash norm \|\vec{x}\| \leftarrow
    vs
    piped norm ||\vec{x}|| \leftarrow



    [III] Here are more symbols than one should be allowed to know:

    aka
    The Comprehensive LaTeX Symbol List.
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