marmistrz's profile - activity

I'd like to calculate the value of the cosine of 52 degrees. The following fails:

lam = 52 * sage.units.degree
cos(lam)

How should I do it correctly?

I have this line in /usr/lib/sagemath/local/etc/jupyter_notebook_config.py but I still need to use %display typeset

Ok, I noticed a weird thing. I have my .ipynb notebook in a directory ~/proj/sage. If I launch sage from within this directory, MathJax is detected properly. But if I launch sage from my home directory and then navigate to the notebook file and select it, Jupyter can't find MathJax. Any ideas?

By default the plot function has only 200 points:

 sage.plot.plot.plot(funcs, exclude=None, fillalpha=0.5, fillcolor='automatic', detect_poles=False, plot_points=200, thickness=1, adaptive_tolerance=0.01, rgbcolor=(0, 0, 1), adaptive_recursion=5, aspect_ratio='automatic', alpha=1, legend_label=None, fill=False, *args, **kwds)

But this look awful when plotting for example $f(x) = \frac{\sin x }{x}$. Since my machine is quite fast, I'd like to set the default to 50000 points.

Is this possible?

When using the Jupyter notebook I always have to type

%display typeset

as my first line so as to enable typesetting.

Is there any way to avoid it and have the answers typeset automatically?

I'm using sagemath-upstream-binary from the PPA and Linux Mint 17.3 Cinnamon.

Before your answer I was playing around a while, so I reinstalled Sage once again (the fourth time) magically, Jupyter works now...

I have two copies of MathJax. One in /usr/lib/sagemath/local/share/mathjax, another in /usr/share/javascript/mathjax.

I open up the jupyter notebook: sage -n jupyter. I open a notebook and what I get is

Math/LaTeX rendering will be disabled.

If you have administrative access to the notebook server and a working internet connection, you can install a local copy of MathJax for offline use with the following command on the server at a Python or Jupyter prompt:

from Jupyter.external import mathjax; mathjax.install_mathjax()

But I don't want a third (sic!) copy of MathJax on my computer! How can I make Jupyter use the existing ones?

I'm using Linux Mint 17.2, used the sagemath-upstream-binary package from the PPA.

I found the root of the problem.

While browsing the net I switched the MathJax renderer to SVG. But only my global MathJax installation has the SVG renderer, the shipped version lacks it.

After changing the renderer to HTML/CSS, the problem disappeared.

I'll file a bug in trac. And for the Jupyter problem, I'll open a new question

No success here. Sage 6.9 was my first install

And the output is http://paste.ubuntu.com/13974887/

It initially worked with the Sage notebook. Suddenly the notebook ceased to work. I tried the Jupyter notebook afterwards. When I open the jupyter notebook, nothing is printed at all. Even if I remove the %display typeset line

I created a couple of commands and realized they produce no output. If typesetting is turned to false, then the output is produced. When I go to the print tab, I get the following error:

File failed to load: localhost:8080/javascript/mathjax/jax/output/SVG/config.js

Why did it suddenly stop working?

I'm using Linux Mint 17.2, used the sagemath-upstream-binary package from the PPA. I'm using the Sage notebook. My commands are

x = var('x')
w = x^4 - (1+3*i)*x^3 - (2-4*i)*x^2 + (6-2*i)*x - 4 - 4*i
p = x^4 + (1-3*i)*x^3 - (4+3*i)*x^2 - (4-2*i)*x + 2*i
solve(w,x)

I tried using Jupyter but I get the following error while creating a notebook in Jupyter:

 Failed to retrieve MathJax from '../nbextensions/mathjax/MathJax.js'

although I have MathJax installed locally in /usr/share/javascript/mathjax and in /usr/lib/sagemath/local/share/mathjax

Let's consider the following example:

w = x^4 - (1+3*i)*x^3 - (2-4*i)*x^2 + (6-2*i)*x - 4 - 4*i
p = x^4 + (1-3*i)*x^3 - (4-3*i)*x^2 - (4-2*i)*x + 2*i
solve(w, x)
w.roots()

When using solve, all complex roots are found. When using roots, only two of them. Why?