Hello to everyone,
I was trying to make some camputational tool for my students, to allow them
to compute powers of matrices quickly. I made a tiny htm page with some
text giving explanations, and the following code embedden in a one-cell
script
DEF=[[0.25,0.55,0.2],[0.35,0.15,0.1],[0.45,0.3,0.7]];
@interact
def _(T=input_grid(3,3, default = DEF, label='Transition matrix $T=$',
to_value=matrix), d=input_box(3, width=5, label="number of digits "),
n=input_box(2,width=5,label="power of $T$, $n=$")):
T = T.apply_map(RealField(d*log(10)/log(2)))
M=T^n
html('$T^n = \displaystyle %s$'%latex(M))
I happen to have a page which background is blue, so the standard output,
in black is not very adapted... Anyone can tell how to change the output
color of html(...) to white?
And I have a second question : I would like to round the matrices ut to
some desired precision. What I did here is not exactly that. I don'n know
why M.round(3) didn't worked... I spent more time that I should have trying
to figure out this... I someone could help, that would be very nice!
Regards,
JC
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