Linked Questions

19
votes
3answers
81k views

How can I type the "isomorphic","not equal" and "the set of integers , rationals and reals" symbol? [duplicate]

How can I type the "isomorphic","not equal" and "the set of integers , rationals and reals" symbol ? What is the code ? $=$ means equal, how to write "not equal" What about real numbers, ...
14
votes
1answer
7k views

How to input matrices when posting questions at Math StackExchange? [duplicate]

I would like to post a question here in which I would like to insert a $2 \times 2$ matrix with entries $a$, $b$, $c$, and $d$, respectively, in the positions row 1 col. 1, row 1 col. 2, row 2 col 1, ...
4
votes
3answers
14k views

How to markup expression using sigma notation for sum in MathJax [duplicate]

I have had trouble trying to express a sigma sum formula. Please do not think I have been lazy, I have been lazy, it is just I have up attempting to work it out after over 2 hours (when my actual ...
10
votes
1answer
5k views

How to write plus-minus sign in MathJax? [duplicate]

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 ...
6
votes
1answer
52k views

How to type greater than or equal to symbols? [duplicate]

What are the markups for such symbols?
23
votes
1answer
5k views

where is the latex reference please [duplicate]

hi, There is a nice pretty markdown ref but no simple quick latex reference. I looked around in the faq and on meta. I also googled for some latex reference and some of it looks slightly different ...
7
votes
1answer
28k views

How to show the integral symbol on this site? [duplicate]

On this question: How do I use substitution in integrals? there are examples of what I want. I just want to show integrals on my questions like that. How can I do it?
5
votes
2answers
10k views

How to do formatting? [duplicate]

I need help with formatting like how to use logs, lims, superscripts and subscripts etc.
9
votes
1answer
8k views

Number sets symbols in Mathjax [duplicate]

How can we write number sets symbols using Mathjax? For example what's the code for Natural numbers set? I couldn't find that in a vast of Mathjax help documents,and the only one I found doesn't work: ...
4
votes
1answer
5k views

Why are (most) spaces eliminated in \mathrm formatting? [duplicate]

Why does this: $\mathrm{The quick, brown fox jumped over the lazy dog.}$ result in this: $\mathrm{The quick, brown fox jumped over the lazy dog.}$ Note ...
3
votes
1answer
25k views

How to write powers ( exponents ) in a proper way? [duplicate]

I don't how to write the powers or the exponents and the other mathematical expressions
1
vote
1answer
11k views

Cannot find how to write infinity [duplicate]

I am new here. How do I write an infinity symbol above summation symbol. I do not know how to write formula on this site. How do I write series formula? I could figure out how to write summation, but ...
5
votes
1answer
2k views

How to write mathematical symbols such as $\sum_{i=n}^\mathbb{N}$ with indices below/above the $\sum$ [duplicate]

I want to write: $\cup_{n \in \mathbb{N}}$, and $\sum_{i=n}^\mathbb{N}$. But I want them the index to be above and below the symbol, not to the side, how do I fix this?
2
votes
1answer
4k views

How to write down the equations? [duplicate]

I am new at the website. I see that there are equations in many posts as well as in the answers. I can't write down this equation in this website. But I need to write it. This may seems to off-topic....
4
votes
2answers
5k views

How to type math symbols in this forum [duplicate]

How can I type math symbols in this forum, like set operators, etc.? If this question is repeated, I am sorry I just searched and couldn't find an answer. And could anyone give me hint to use Tags ...
1
vote
3answers
3k views

How to format maths equations to display correctly [duplicate]

I am trying to find the list of Mathjax/Latex instructions on how to type equations and symbols so they display correctly on the site. ie. $2^2$ rather than 2^2
2
votes
1answer
1k views

how to write complex mathematics formula here? [duplicate]

How can i write math formula here?there is any way to write complex math formula here? I want to add math equation here but it seems no tool for writing formula.
3
votes
1answer
1k views

How to type log functions to a specific base using the math exchange [duplicate]

Say, I want to type log3 to the base 30, which LaTeX command should I use for it?
0
votes
1answer
4k views

How to use normal text along with mathjax in same line? [duplicate]

I was trying to display both normal text and mathjax generated output continuously in the same line. I've tried configuring inline technique using \$ but failed. I also tried \text{...} which does not ...
1
vote
1answer
2k views

Simple Alignment to the Left [duplicate]

Yesterday I posted a question here followed by a Post Script. How do I align the equations in the Post Script by the "=" signs, just like "someone you know" did when responding to ...
-5
votes
1answer
1k views

How to type Sigma and other symbols in MathJax [duplicate]

Can someone please illustrate how to use the sigma symbol using mathjax and other such symbols please help? By the way the moderators of this site are extremely helpful so thank you.
1
vote
1answer
2k views

How do you use mathematical symbols on this website? [duplicate]

For example, how do I the symbol f(x) and make it appear as mathematical appearing instead of just appear as text. I know I am going to get downvotes for this, but I couldn't find any help files ...
1
vote
1answer
551 views

MathJax doesn't render dynamically... Why not? [duplicate]

When I post this: \sum_{n=0}^\infty\binom{n}{k}x^n=\frac{x^k}{(1-x)^{k+1}}\tag{1} ... all I see is string of code, not the nifty looking math symbols. When I post the above to a test site, however, ...
3
votes
1answer
752 views

Syntax for writing a function defined by cases [duplicate]

Suppose we want to write about a function in a question that is defined by cases. In our note books we generally write "$f(x) =$" and then we give a big curly left bracket, and then define various ...
0
votes
1answer
920 views

How do I use MathJax? [duplicate]

It has become apparent to me and many here that I don't understand MathJax inputs. I primarily just need to understand how to input calculus problems. Can anybody put me on the right path to ...
1
vote
1answer
230 views

I don't know how to write formulas for integration, power series, etc. in Math.SE [duplicate]

I want to ask questions from calculus but I do not know how to write the formulas; it causes me lots of problems. I do not know to how write power series as there is no option in my keyboard. Can ...
5
votes
1answer
274 views

How to write a line through text? [duplicate]

How to write a line through text or words ? Like the \underline{} in latex but in the middle the line, to indicate something is wrong.
-1
votes
1answer
232 views

MathJax help - negative fractions [duplicate]

I just want to know how you write negative fractions because I don't seem to understand why I am not able to make a fraction negative. Is it even possible?
2
votes
1answer
134 views

dash over a letter [duplicate]

How do I write a letter like : A ,with a bar over it ( stands for the closure of A in topology) . I looked it up but \={A} didn't work , see : $\={A}$ .Help
1
vote
1answer
216 views

Enabling TeX in an answer [duplicate]

I searched but didn't find basic information on enabling TeX in an answer. $...$ didn't seem to work.

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