Edit: how to colour an edited formula

[mcastillo356]

TL;DR Summary

I've needed to edit a formula, and wanted to colour it. No way. LaTeX command "\color{red}" doesn't work. Whch should be the typing?

Hi PF
How to colour the edited formula?
Greetings!

 

[robphy]

In what application?
$$\vec F_{net}=m\vec a$$
... but this seems tedious to do for specific items in an equation.
Quote this post to see the tags COLOR tags surrounding the tex tags.

You could use \bf ...
$$\bf \vec F_{net}=m\vec a$$
or \Large
$$\Large \vec F_{net}=m\vec a$$

 

[mcastillo356]

In what application?
$$\vec F_{net}=m\vec a$$
... but this seems tedious to do for specific items in an equation.
Quote this post to see the tags COLOR tags surrounding the tex tags.

You could use \bf ...
$$\bf \vec F_{net}=m\vec a$$
or \Large
$$\Large \vec F_{net}=m\vec a$$

Fine. I'll give a try... Suppose I want to colour only ma in F=ma in this sentence: "The formula $\vec F=m\vec a$ is one of the most importants in physics", written inside a paragraph... How?
Thanks!

 

[robphy]

Indeed, $\vec F=m\vec a$ is an important equation.

[COLOR=rgb(147, 101, 184)][itex] \vec F=m\vec a [/itex][/COLOR]

 

[mcastillo356]

Hi, @robphy , PF
What about if the LaTeX inside a sentence is

\dfrac{|f(u)-f(v)|}{|u-v|}=\dfrac{||u|-|v||}{|u-v|}\leq 1

and I want to colour
\dfrac{||u|-|v||}{|u-v|}

 

[robphy]

Unfortunately, it seems like one would have to break up the sentence into two LaTeX parts
in order to colorize that part.

I'm not sure if
http://docs.mathjax.org/en/latest/input/tex/extensions/color.html
is being used.

 

[mcastillo356]

A little bit mind-blowing, I will take it easy, ie, read and write down #2

Love

 

[pbuk]

Experimenting:

V3 ${ \color{red} x } + { \color{blue} y }$

V2 $\color{red}{x} + \color{blue}{y}$

$$ \color{red}{x} + \color{blue}{y} $$

 

[pbuk]

See https://www.physicsforums.com/threads/latex-colorv2-extension.1012183/

Once this is fixed, $\dfrac {|f(u)-f(v)|} {|u-v|} = \color{red} {\dfrac {||u|-|v||} {|u-v|} } \leq 1$ should work.

\dfrac {|f(u)-f(v)|} {|u-v|} = \color{red} {\dfrac {||u|-|v||} {|u-v|} } \leq 1

Edit: see it working here

 

[robphy]

$\require{colorv2} { \color{red} {\vec F_{net}}}=m {\color{blue}{\vec a}}$

 

[robphy]

Experimenting:

V3 $\require{colorv2} { \color{red} x } + { \color{blue} y }$

V2 $\color{red}{x} + \color{blue}{y}$

$$ \color{red}{x} + \color{blue}{y} $$

\require{colorv2}

 

[pbuk]

\require{colorv2}

Ah yes that forces it but it would be better to fix the broken configuration.

 

[robphy]

$\require{color} \colorbox{yellow}{1+1=10}$

$\color{red}1+1=10$

 

[pbuk]

Ah yes that forces it but it would be better to fix the broken configuration.

.. which Greg has now done (it was a breaking change in MathJax 3.1) so no need for \require.

 

[robphy]

$\colorbox{yellow}{Joy!}$

$\fcolorbox{black}{yellow}{\vec F_{net}} =m\color{blue}{\vec a}$

Now if we could only get some interactive javascript [like Desmos or trinket/Glowscript embeded].