symbols
I am at my wits end trying to get the following right in my document
10% x 90(degrees)
the syntax I have tried are the following
10\% $\times$ 90\degree (get the undefined symbol error)
$ 10\% \times 90\degree $ (get the undefined symbol error)
10\% \times 90\degree (get the missing $ symbol error)
Can someone please tell me how to get this simple thing right?
You have to define the \degree command first. See Macro for degree symbol for possible pretty degree symbols.
A quick & dirty fix that works is just to change the \degree to ${}^\circ$, so
title={Surface Tension of Alcohol and Water from 20 to 50${}^\circ$},
The problem here is two-fold. Not only should \gamma be written using math-mode $\gamma$, but that \X is undefined.
\documentclass{article}
\begin{document}
Hello world! $\gamma$
\end{document}
How to interpret the error message style of TeX is obtained by reading Chapter 6: Running TeX (p 31) in the TeXbook:
! Undefined control sequence. l.2 \vship 1in ?TeX begins its error messages with ‘
!’, and it shows what it was reading at the time of the error by displaying two lines of context. The top line of the pair (in this case ‘\vship’ ) shows what TeX has looked at so far, and where it came from (‘l.2’, i.e., line number 2); the bottom line (in this case ‘1in’ ) shows what TeX has yet to read.
In your case, TeX's already read \X (the undefined control sequence), but not yet \gamma.
Best Answer
An examination of the actual error message reveals that it's not
\timesbut\degreethat's causing the "undefined control sequence" problem. You need to define the macro\degreefirst. I suggest you define it as follows:With this definition, the macro must be used in math mode -- which, I assume, is OK.
You can then write