The Museum of HP Calculators

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How to use a formula in a post

Posted by Thomas Klemm on 8 Nov 2010, 4:11 p.m.

Let's assume you want to use a formula in your post:

$e^{i\pi}+1=0$

How can you do that?

1. Use the equation editor to enter the formula.
2. As a result you get the formula written in LaTeX:
e^{i\pi}+1=0
3. Choose URL Encoded at the bottom and copy it:
http://latex.codecogs.com/gif.latex?e%5E%7Bi%5Cpi%7D&plus;1%3D0

4. Insert the result in your post within an image-tag.
[img:http://latex.codecogs.com/gif.latex?e%5E%7Bi%5Cpi%7D&plus;1%3D0]


Egan Ford posted the following:

If you are too lazy to upload images you can use aamath for "a-text":

$echo "e^(i*pi)+1=0" | aamath __ i || e + 1 = 0$ echo "sum([n-1;r],r = 0 .. min(n-1,4))" | aamath
min(n - 1, 4)
=====
\         / n - 1 \
>        |       |
/         \   r   /
=====
r = 0


Don Shepherd noted:
Quote:
Yeah, the MoHPC does have many of those symbols here: http://www.hpmuseum.org/software/

arrowl.gif
delta.gif
deltap.gif
diamond.gif
divide.gif
dwnarrow.gif
dwnquest.gif
exch.gif
exchi.gif
gto.gif
integral.gif
interg.gif
lesseq.gif
meanx.gif
noteq.gif
notequal.gif
pi.gif
pict0.jpg
rdelta.gif
rolldn.gif
rollup.gif
rtbldarw.gif
sigma.gif
sqrt.gif
stee.gif
sum.gif
summi.gif
sumpl.gif
symangle.gif
symdel.gif
symdelc.gif
symgamma.gif
symint.gif
symnoteq.gif
symphic.gif
sympi.gif
sympic.gif
symsqrt.gif
symsum.gif
symsumm.gif
symsump.gif
symsums.gif
symtheta.gif
symthetc.gif
uline.gif
uparrow.gif
yhat.gif


Didier Lachieze proposed:

One way could be to use GIF/PNG images such as the ones HERE.

For example:

Edited: 18 Oct 2012, 4:43 p.m.