MATH SYMBOLS

[dbanner]

Where are the math symbols?
Is there a special keyboard software I can use?
What is the best way of writing and posting math equations?

[waltr]

Like these?
?
Σ
?

Look up ALT Key codes.

For more complex math it is better to use LaTeX.

[Skippy]

If you're not familiar with them, the sub and sup tags are useful
y = x[ sup ]2[ /sup ] ...without the spaces, produces:
y = x²

The forum does support Latex, I've never tried it, maybe George Q can tell us where to find an introductory tutorial ?

[waltr]

Thanks Skippy. I didn't know about sub & sup tags.

I see that once my above post went live the first and last ALT code examples did not work.
They looked fine as I was typing the post.

[Qiaozhi]

If you're not familiar with them, the sub and sup tags are useful
y = x[ sup ]2[ /sup ] ...without the spaces, produces:
y = x²

The forum does support Latex, I've never tried it, maybe George Q can tell us where to find an introductory tutorial ?

Try this:
latexsheet-a4.pdf

[Skippy]

Thanks, George.

I admit defeat on typing the 'degrees' symbol, I usually just write " 90 degrees phase shift", but 90[ sup ]o[ /sup ] with a lower-case letter O does works: 90^o. And I default to BASIC language and write sqrt ( a² + b² ) when I mean square-root.

[dbanner]

I think there is software for on screen math keyboard which allows copying and pasting of the math script. I know I've seen an app on Google play store which does this.

[Carl-NC]

You can create LaTex equations here:

https://www.codecogs.com/latex/eqneditor.php

Copy/paste the LaTex code (NOT the HTML code) and wrap it in [LAT EX] [/LAT EX] tags (but LATEX, not LA TEX), like this:

[LAT EX]
i(t) = \frac{1}{L}\cdot \int v(t)dt
[/LAT EX]

to produce

[Qiaozhi]

Thanks, George.

I admit defeat on typing the 'degrees' symbol, I usually just write " 90 degrees phase shift", but 90[ sup ]o[ /sup ] with a lower-case letter O does works: 90^o. And I default to BASIC language and write sqrt ( a² + b² ) when I mean square-root.

Use [latex]^{\circ}[/latex] to create the degree symbol.
You can also use: [latex]\textdegree[/latex].

Example:

As for square-root, use [latex]\sqrt{}[/latex]

Example:
which is realized using [latex]R_d\ =\ \frac{1}{2}\sqrt{\frac{L}{C}}[/latex]

[dbanner]

I found a great app for writing math script on Android tablet or phone. It allows saving the script and also exporting .png Super easy to use and it is by far the best for quick writing any math equations.
You can find it at the Google play store.
https://play.google.com/store/apps/d...utara.mathchat

[Qiaozhi]

I found a great app for writing math script on Android tablet or phone. It allows saving the script and also exporting .png Super easy to use and it is by far the best for quick writing any math equations.
You can find it at the Google play store.
https://play.google.com/store/apps/d...utara.mathchat



[ATTACH=CONFIG]50444[/ATTACH]

It's still a lot better to learn the LaTeX syntax.



Once you know it, you can also use the TexMaths equations plugin available for LibreOffice.

[dbanner]

It's still a lot better to learn the LaTeX syntax.



Once you know it, you can also use the TexMaths equations plugin available for LibreOffice.

Thanks for the info.
Yes' it is good to master the LateX syntax, I agree. For speaking the language of Engineers, on forums or for publishing papers, books etc. I need to install on PC, along with libreoffice and the Texmaths extension. Thanks for that. I might switch over to Ubuntu. Planning on doing some intense studies for remainder of this year. I always wanted to be an electronics engineer, now is my chance. This pandemic has shown you should never put off for tomorrow what you can do today.
Maybe after a year or two I can go swimming with the sharks.

[Qiaozhi]

I might switch over to Ubuntu.

You should also try Linux Mint -> https://linuxmint.com/about.php
It's based on Ubuntu and Debian, and doesn't use Ubuntu's awful Unity interface.
I'm running the Cinnamon edition.

[dbanner]

You should also try Linux Mint -> https://linuxmint.com/about.php
It's based on Ubuntu and Debian, and doesn't use Ubuntu's awful Unity interface.
I'm running the Cinnamon edition.

Yes, I have a used Mint before, it's an absolutely fantastic Linux distro.
After some more playing around, composing math script using LaTex is actually quite easy, so long as you get familiar with the various syntax commands.
I'm having fun.

[Qiaozhi]

Yes, I have a used Mint before, it's an absolutely fantastic Linux distro.
After some more playing around, composing math script using LaTex is actually quite easy, so long as you get familiar with the various syntax commands.
I'm having fun.

That's a very comprehensive document. I haven't seen that one before.
Here's also a useful LaTeX Cheat Sheet: