Writing math symbols.

STF92

New member
Joined
Feb 8, 2017
Messages
4
Hi: how do you write mathematical symbols here? I've seen other posts and they seem to use ASCII code but rendering special symbols.
 

Subhotosh Khan

Super Moderator
Staff member
Joined
Jun 18, 2007
Messages
24,624
Hi: how do you write mathematical symbols here? I've seen other posts and they seem to use ASCII code but rendering special symbols.
We use ASCII symbols and LaTex (do a google search to learn more about it,).
 

joshuaa

Junior Member
Joined
Aug 21, 2020
Messages
57
this is a latex expression

\(\displaystyle \frac{1}{x} = \) \frac{1}{x}
 

Otis

Elite Member
Joined
Apr 22, 2015
Messages
2,953
… ASCII code but rendering special symbols.
Hi STF92. Suggestions for math symbols appear in the forum's posting guidelines. See the paragraph subheaded "Post the complete text of the exercise."

I often use ASCII characters because my keyboard has a numeric keypad; that allows me to type ALT-XXXX codes, for inserting many ASCII math characters. Alternatively, I use the Windows Character Map, to select, copy, and paste special characters. (Set the 'Group by' field to 'Unicode Subrange' and select 'Mathematical Operators' or other topics from the pop-up window.)

± × ÷ ∑ ∙ √ ∞ ∩ ≈ ≠ ≤ ≥ σ Ω α β θ º π Ψ


There's a link in the posting guidelines also for learning how to text expressions containing symbols. For examples, typing something like

root[3](625) \(\quad\) means \(\quad \sqrt[3]{625}\)

sum[n=k,infty](x_n) \(\quad\) means \(\quad \sum_{k}^{\infty} x_{n}\)

int[a,b](x^3 + 7x - 10) dx \(\quad\) means \(\quad \int_{a}^{b} 3x^{3} + 7x - 10 \text{ dx}\)


For aligning columns (when typing a matrix, for example), you can use Code tags and a fixed-width font. (Click the 'Post Reply' button and then click the gear icon at the right end of the toolbar, to see my typing for the codes.)
Code:
-1   3  10   4
 0  12   7  -2
 0  -1   3   1

If you're interested in learning about LaTeX, you can start with this post.

Cheers 😎
 
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