Le forum de XCAS

It appears that xcas is no longer putting in the parenthesis around the argument in sin:

The xcas entry: produces: \(\left[\begin{array}{c}a=\mathrm{str2}\cdot \sin \mathrm{ang}\\b=\mathrm{str2}\cdot \cos \mathrm{ang}\end{array}\right]
\)

From:
% Generated by xcas
\documentclass{article}
\usepackage{pst-plot,color}
\usepackage{graphicx}
\begin{document}
\noindent \framebox{1} {\tt eq1:=[[a=(str2*sin(ang))],] } \\
\begin{equation} \label{eq:0}
\left[\begin{array}{c}a=\mathrm{str2}\cdot \sin \mathrm{ang}\\b=\mathrm{str2}\cdot \cos \mathrm{ang}\end{array}\right]
\end{equation}
\noindent \framebox{2} {\tt } \\

\end{document}

My post got corrupted somehow, hope you can understand it. I was not able to edit it.

Matt

It seems it is a question for Luka.
Note that you can run in your session before converting to latex, this should switch to my old latex code with parenthesis around the argument.

Thanks. That helps but it breaks some of my recent tweaks using perl scripts to change diff(x(t),t,2), for example, to a more textboox style:

\(\frac{d2\left(\text{y(t)}\right)}{\mathrm{dt2}}=\frac{4 \sqrt{10} \frac{d2\left(x(t)\right)}{\mathrm{dt2}} \sqrt{x\left(t\right)}^{-1}}{2}-4 \sqrt{10} \frac{1}{2} \frac{d\left(\text{x(t)}\right)}{\mathrm{dt}} \frac{1}{2} \frac{d\left(\text{x(t)}\right)}{\mathrm{dt}} \sqrt{x\left(t\right)}^{-1} x\left(t\right)^{-1}
\)

Even better (added tweak):

\(\frac{d^{2}\left(\text{y(t)}\right)}{\mathrm{dt^{2}}}=4 \sqrt{10} \frac{d^{2}\left(x(t)\right)}{\mathrm{dt^{2}}} \frac{\sqrt{x\left(t\right)}^{-1}}{2}-4 \sqrt{10} \frac{1}{2} \frac{d^{}\left(\text{x(t)}\right)}{\mathrm{dt^{}}} \frac{1}{2} \frac{d^{}\left(\text{x(t)}\right)}{\mathrm{dt^{}}} \sqrt{x\left(t\right)}^{-1} x\left(t\right)^{-1}\)

From:

New latex conversion omits parentheses when applying functions to simple arguments like e.g. x. I will add an additional condition that the argument must be a one-letter symbol, which should make the output better (one-letter symbols are typeset in italic, so removing parentheses wouldn't affect readability).

Sounds good, Thanks