## LaTeX forum ⇒ Text Formatting ⇒ Trying to typeset basic maths

Information and discussion about LaTeX's general text formatting features (e.g. bold, italic, enumerations, ...)
PaulSutton
Posts: 7
Joined: Wed Apr 15, 2020 1:26 pm

### Trying to typeset basic maths

Hi

A few years ago, I created a book , which was more of a mini latex project to produce a set of instructions on how to create loops and nested loops in Scratch and Python.

Since then I have developed my LaTeX skills further, I am now trying to re-write this as Scratch 3 is now out, but I can also apply some of what I have learned over the last few years.

You can view the early start here

I am trying to typeset the maths to explain the fact that if we are repeating the loop 72 times we need to move the turtle 5 degrees, each time as 360 divided by 5 = 72

I seem to be having issues type setting this,, as line 94 gives me undefined control sequence.,

\$360 \div 5 = 72\$

I am not too sure what I am doing wrong, I have tried to use the amsmath package but I am sure i don't actually need this.

I am aware also that it is throwing up errors as my images is using explicit placing [h] but I will make a separate post on that issue.

I know the solution is probably something really simple that I am just overlooking but I am not going to learn via trial and error as this will eventually fix it, but I won't understand why.

Thank you for any help

Paul Sutton

Bartman
Posts: 97
Joined: Fri Jan 03, 2020 2:39 pm
There is a typo in `\texfbf`, but the command is called `\textbf`.

Why do you use the `\paragraph` command at these places? Should the text simply be highlighted in bold?

Some off-topic remarks:

The inputenc package with the `utf8` option is no longer necessary since april 2018. You can find out more in ltnews.

In most cases, the hyperref package should be loaded last.

The command `\tikzstyle` is out of date.

I would like to recommend one of the following replacements in the source code of the flowchart, so that the connection arrow does not overlap the rectangular node:

`%\draw [arrow] (pro11) -- (pro3);% present\draw [arrow] (pro11.west) -- (pro3.east);% suggestion 1%\draw [arrow] (pro11.north west) -- (pro3.south east);% suggestion 2%\draw [arrow] (pro11) -- (\$(pro11-|pro3)!.5!(pro11)\$) |- (pro3);% suggestion 3`

The third suggestion needs the `calc` library.

A matrix can set the distance between its nodes, so the `yshift` option would become unnecessary.

PaulSutton
Posts: 7
Joined: Wed Apr 15, 2020 1:26 pm
Thank you for this, I will make the changes when I log back into Overleaf later and good point on drawing the arrows properly too, I was wondering about that.

It does look like the `\texfbf` command is throwing up the error, I was under the impression it was suggesting my maths formula was badly formatted.

I will remove the paragraph commands and just leave the text as it is, then use `\textbf{}` where I want to highlight something, which would be better.

Thanks again

Regards

Paul
Last edited by cgnieder on Sun Apr 26, 2020 5:38 pm, edited 1 time in total.