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Thread: How to insert the integral sign

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    How to insert the integral sign

    I'm new here and have an integral question. How do I post an equation with the integral sign? Thanks!

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    Elite Member mmm4444bot's Avatar
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    Quote Originally Posted by kinosh View Post
    I'm new here and have an integral question. How do I post an equation with the integral sign? Thanks!
    If you're using Windows, the integral sign is in the Character Map:

    ∫ f(x) dx

    Or, you can type any convention that makes sense:

    int[ f(x) dx, x=a..b ]

    int[a,b] f(x) dx

    In the forum guidelines, there's a link to a site which explains how to type math as text. Check it out.
    "English is the most ambiguous language in the world." ~ Yours Truly, 1969

  3. #3
    Elite Member mmm4444bot's Avatar
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    The LaTex typesetting system is also available. Its use requires learning programming codes and syntax. You can google for tutorials and examples, but, unless you plan on using it a lot, the learning curve may not be worth the effort for you. Also, be forewarned that there are different implementations of LaTex on the Internet; not everything you may see works the same way here (if at all).

    If you'd like to view the coding for any LaTex you see rendered here, you may right-click on the LaTex expression and use the pop-up menu to: Show Math As → TeX Commands.

    At this site, each line of LaTex coding must be enclosed within [tex]\text{[te}\text{x]}[/tex] and [tex]\text{[/te}\text{x]}[/tex] tags.

    [tex]\displaystyle \int_{a}^{b} 3x^2 + 7x - 10 \; \text{dx}[/tex]
    "English is the most ambiguous language in the world." ~ Yours Truly, 1969

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