# Testing integral symbol

**URL:** <https://boards.straightdope.com/t/testing-integral-symbol/179692>\
**Category:** About This Message Board\
**Created:** [June 4, 2003, 9:10pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692 "2003-06-04T21:10:11Z")\
**Posts on this page:** 10\
**Page:** 1

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**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [June 4, 2003, 9:10pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/1 "2003-06-04T21:10:11Z")

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ò[sub]0[/sub][sup][sup]¥[/sup][/sup]= ¦(x).

Just testing. You should see the correct symbols for a definite integral with limits from 0 to infinity = f(x). Yes?

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**Author:** ![JeffB](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/jeffb/32/188_2.png) [@JeffB](https://boards.straightdope.com/u/JeffB)\
**Post date:** [June 4, 2003, 9:12pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/2 "2003-06-04T21:12:28Z")

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Yes (on IE 5.5).

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**Author:** ![Achernar](https://avatars.discourse-cdn.com/v4/letter/a/e274bd/32.png) [@Achernar](https://boards.straightdope.com/u/Achernar)\
**Post date:** [June 4, 2003, 9:38pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/3 "2003-06-04T21:38:37Z")

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No on Mozilla. Let me guess. You’re using the Symbol font? Here’s the same thing using Unicode and HTML escape sequences, which works on Mozilla/Netscape. Maybe people can say if they can see this:

∫[sub]0[/sub][sup]∞[/sup] = _f_(ξ)

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**Author:** ![Achernar](https://avatars.discourse-cdn.com/v4/letter/a/e274bd/32.png) [@Achernar](https://boards.straightdope.com/u/Achernar)\
**Post date:** [June 4, 2003, 9:47pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/4 "2003-06-04T21:47:20Z")

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Ooops. I assumed that the “x” was also in the Symbol font as well, but you said f(x), not f(xi). :o

I also realize you have an italic f there, not just the oblique we get with the \* tag. Here’s my amended depiction:

∫[sub]0[/sub][sup]∞[/sup] = ƒ(x)

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**Author:** ![Q.E.D](https://avatars.discourse-cdn.com/v4/letter/q/51bf81/32.png) [@Q.E.D](https://boards.straightdope.com/u/Q.E.D)\
**Post date:** [June 4, 2003, 10:02pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/5 "2003-06-04T22:02:20Z")

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Huh. I wonder why Mozilla doesn’t like the Symbol font. Thanks, **Achernar**.

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**Author:** ![Achernar](https://avatars.discourse-cdn.com/v4/letter/a/e274bd/32.png) [@Achernar](https://boards.straightdope.com/u/Achernar)\
**Post date:** [June 4, 2003, 10:10pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/6 "2003-06-04T22:10:21Z")

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[Boom shaka laka laka](http://boards.straightdope.com/sdmb/showthread.php?s=&threadid=120922)

I’ve gotten used to it. I think you should probably be okay if you write it out as well as putting the symbols, like you did in the OP.

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**Author:** ![Loopus](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/loopus/32/15343_2.png) [@Loopus](https://boards.straightdope.com/u/Loopus)\
**Post date:** [June 4, 2003, 10:11pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/7 "2003-06-04T22:11:02Z")

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Yes on Opera 7.0.

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**Author:** ![Tom\_P](https://avatars.discourse-cdn.com/v4/letter/t/7993a0/32.png) [@Tom\_P](https://boards.straightdope.com/u/Tom_P)\
**Post date:** [June 5, 2003, 12:17pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/8 "2003-06-05T12:17:05Z")

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Opera 7 here too, but I don’t see the right symbols in the OP, but **Achenar** ’s post shows them. In IE 6 I see the correct symbols.

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**Author:** ![Arnold\_Winkelried](https://avatars.discourse-cdn.com/v4/letter/a/3d9bf3/32.png) [@Arnold\_Winkelried](https://boards.straightdope.com/u/Arnold_Winkelried)\
**Post date:** [June 5, 2003, 4:05pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/9 "2003-06-05T16:05:02Z")

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I don’t see the integral sign in Q.E.D.'s OP, but I see it in Achernar’s second post. Safari 1.0 Beta 2 on Mac OSX.

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**Author:** ![Bruce\_Daddy](https://avatars.discourse-cdn.com/v4/letter/b/85f322/32.png) [@Bruce\_Daddy](https://boards.straightdope.com/u/Bruce_Daddy)\
**Post date:** [June 5, 2003, 4:10pm UTC](https://boards.straightdope.com/t/testing-integral-symbol/179692/10 "2003-06-05T16:10:45Z")

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What **Arnold Winkelried** said for Netscape 7.01