This question already has an answer here:

Plus-on-up and minus-on-down

Plus-Minus. Means a quantity of same magnitude can have either a positive or a negative value. As commonly found in square roots such as

$$\sqrt[2]{625}= +-25$$.

Here is an Wikipedia SVG-example of a basic trigonometry formula:

sin theta equals to plusminus Sqrt over whole 1 minus cos square theta.

How to render it using MathJax?



Also I've seen use of minus-plus, i.e. minus-plus.

I can't remember specific example but it was probably in some chemistry related text, in a situation; two variables (say $x$ and $y$) each have positive and negative value. But if $x$ is positive then $y$ is negative, and if $x$ is negative then $y$ is positive.

Don't know whether the second one is standard or not; but if the second-one is standard or allowed in MathJax; how to use it in MathJax formatting??


PS. I've gone through MathJax basic tutorial and quick reference and also seen Google but could not find.


marked as duplicate by quid, Community May 21 '17 at 12:54

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

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    $\begingroup$ \pm and \mp $\endgroup$ – Daniel Fischer May 21 '17 at 12:39
  • $\begingroup$ Great. You should publish it as answer and I'm accepting it. $\endgroup$ – Always Confused May 21 '17 at 12:40
  • $\begingroup$ @DanielFischer: Sorry didn't see your comment before I posted my answer $\endgroup$ – Thomas May 21 '17 at 12:41
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    $\begingroup$ It is in the tutorial, point 12. $\endgroup$ – quid May 21 '17 at 12:48
  • $\begingroup$ @quid Can't find there. Mentioned in PostScript. $\endgroup$ – Always Confused May 21 '17 at 12:51
  • $\begingroup$ Accepted as duplicate "that solved my purpose". But It is quite hard to find there. it has been also mixed up with division sign. $\endgroup$ – Always Confused May 21 '17 at 12:56
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    $\begingroup$ It's alright you asked the question. I agree it's not that easy to find there. I still feel it should be closed as dupe for systematic reasons. Down the road your Q will still serve as useful sign-post for future user having had the same problem. $\endgroup$ – quid May 21 '17 at 13:05
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    $\begingroup$ Detextify is helpful for this and similar questions. $\endgroup$ – Clarinetist May 22 '17 at 12:48

You can use $$ \pm $$ or $$ \mp $$ That is





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