Embedded Files
You can type the Latex for mathematical expressions. Click the icon
to see their mathematical forms and click again to go back to the editing mode
The following standard LaTeX commands are supported
^
_
\quad
\overleftarrow
\overrightarrow
\rm
\mathbb
\not
\frac
\sqrt
\left
\right
\text
\over
\overset
\underset
\overline
\widetilde
\widehat
\underline
\begin{array}...\end{array}
\operatorname
\~
\^
\'
\`
\"
The app also supports \newcommand in LaTeX. The structure of this command is \newcommand{cmd}[args]{def}
The LaTeX symbols on the following websites are implemented
If you see some symbols on these pages that are not implemented in the app, you can use the following special built-in LaTeX commands to create them
\smaller make expression smaller
The formula of this command is $\smaller{expr}$
\bigger make expression bigger
The formula of this command is $\bigger{expr}$
\taller make expression taller
The formula of this command is $\bigger{expr}$
\shorter make expression shorter
The formula of this command is $\shorter{expr}$
\wider make expression wider
The formula of this command is $\wider{expr}$
\thinner make expression thinner
The formula of this command is $\thinner{expr}$
\mix mix two expressions
The formula of this command is $\mix{??}{expr0}{expr1}$ where first ? is either l, r or c and the second ? is either t, b or c
You can try the formula $\mix{lc}\longrightarrow /$
\vcombine vertically combine two expressions
The formula of this command is $\vcombine{expr0}{expr1}$
\higher make the expression to be at a higher position
The formula of this command is $\higher{expr}$
\lower make the expression to be at a lower position
The formula of this command is $\lower{expr}$
You can design your own LaTeX symbol by clicking
and choose "Design a LaTeX symbol". It opens the designer
Type the command and draw your symbol by hand. Click
to use paint for drawing and click
to use the eraser. Use the spinner at the right to choose the size of paint or eraser.
Remark. if you see some numbers that are missing in the shown list of the spinner, please close and open the spinner several times. Those missing numbers will show
You can import an image from the shared device storage by clicking
and choosing "Import an image". Then select the image you want to import
You can export the drawing image to the shared device storage by choosing "Export the image". Then you choose a folder to which you want to export the image, and enter a saved file name for exporting
You can choose the color for painting by clicking
to show the dialog for choosing the painting color
You can choose the designed symbol to be an operator or letter by using the spinner at the right
Click
if you want to clear drawing. When you finish the work, click
to save the designed symbol
To use the designed symbol, go back to the main view and type the command in the editor
You can edit the designed symbol by doing a long click on the corresponding item in the list and choosing the action "Edit"
The editing item always has a light blue background. If you want to cancel the editing, you click the light blue item, and then choose "Yes" to cancel drawing
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