The next version of mathjax does line breaking. I don't think we've
upgraded yet:
I suppose that i have to wait the next SAGE release?
wxMaxima has a lisp script that outputs MathML. I don't think we do
anything along those lines. It would be nice if the output would use a
mathml (perhaps wit
26, 2013 8:47:25 AM UTC+1, Dmitry Shkirmanov wrote:
Hello, list. I used to use Sage a couple of years ago but moved to
the
Maxima.
The reason for the moving to the maxima was that Sage could not
split a
long symbolic output into several lines and showed this output as
Hello, list. I used to use Sage a couple of years ago but moved to the
Maxima.
The reason for the moving to the maxima was that Sage could not split a
long symbolic output into several lines and showed this output as one
long line (i used browser based gui). Such kind of output is absolutely
u
Hello, i am using the latex's breqn package to show long outputs(in
notebook). System is debian squeeze, version of Sage is 4.7.
I typed
%latex
\begin{dmath*}
\sage{latex(numDet)}
\end{dmath*}
and Sage returned:
Traceback (most recent call last):
File "", line 1, in
File "_sage_input_10.py"
Hello, i think that my question is simple one, but i have not found
answer in the reference manual. I need a function of vector variables.
For example:
var("x1,x2,x3")
x=vector([x1,x2,x3])
Is it possible to define a function of the vector variable "x",
something like this: f(x)=sum(x[i]*x[i]for i i
> Hi, the output cell I get is too little (vertically) for the size of
> the output and I can't see it completely. This happens sometimes when
> the output is long and only when I ask for the typeset version of the
> output.
Hello, as far as i know Sage can not divide output into lines.
You can
> Not sure what's going on, but it seems that alpha.sagenb.org is actually
> currently at an older version than normal sagenb.org , just for your
> information...
Just the same behaviour i encountered in Sage 4.6.2 on my laptop.
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Hello, list, look please at the worksheet http://alpha.sagenb.org/home/pub/121/
It seems that the output of show(bb) is wrong, there is spurious
factor 1/4 in the second term.
In this worksheet in first cell i typed:
reset()
forget()
var("r,ksi,a3,A")
aa=-r^2*(ksi+a3)+I*sqrt(A)*r
bb=-(ksi+
> You must load the file rewrite_xxx attached to this wiki-page.
Thanks for help, it works. But i think that It wouldn't be such a bad
idea to mention at wiki-page that one must load the file rewrite_xxx.
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>
> return (t.real_part()+I*t.imag_part()).simplify_trig()
>
Thank you very much, i works.
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ht
Hello, list, i need a function that can exp(I*x) --> cos(x)+I*sin(x)
At http://wiki.sagemath.org/symbolics/rewrite i found the rewrite
function. But this function is not mentioned in Sage reference manual,
and Sage 4.6.2 does not know this function:
NameError: name 'rewrite' is not defined
How i ca
input cell can not be carried over to the next line and comes out of
view. Is it possible to change such behaviour?
>>>
>>> Can you be more specific? In my browser at least it just carries over
>>> to the next line, spaces or not, commas or not. Maybe give us the
>>> example, what brow
> > input cell can not be carried over to the next line and comes out of
> > view. Is it possible to change such behaviour?
>
> Can you be more specific? In my browser at least it just carries over
> to the next line, spaces or not, commas or not. Maybe give us the
> example, what browser, etc.
Hello list, i found that a long expression without spaces in the sage
input cell can not be carried over to the next line and comes out of
view. Is it possible to change such behaviour?
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> sage: expr2 = sqrt(a^2-b^2)
> sage: expr2.full_simplify()
> sqrt(a - b)*sqrt(a + b)
I am sorry, there is a mistake.
wrong answer gives
#
var("a,b,c,d,f")
assume(a-b<0)
expr=sqrt((a^2-b^2)*f)
expr2=expr.full_simplify()
show(expr2)
#
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> sage: a=2; b=3; f=5
> sage: assert(a-b<0)
> sage: sqrt(a-b)*sqrt(a+b)*sqrt(f)
> 5*I
> sage: sqrt((a^2-b^2)*f)
> 5*I
> sage:
Of course, you are right. But
#
sage: var("a,b,c,d,f")
(a, b, c, d, f)
sage: expr=sqrt((a-b)*(c+d))
sage: assume(a-b<0)
sage: expr.full_simplify()
sqrt(-c - d)*sqrt(-a + b)
> After you get the output of the solve(), you can simplify() it to send
> it back to Maxima, and that might work to get the assumptions
> recognized.
I tried it and received wrong answer.
Let's consider for example the code:
#
reset()
forget()
var("a,b,c,d,f")
assume(a-b<0)
expr=(a^2-b^2)*f
expr
I asked Sage to solve the system of the equations:
#
var("pasquare,pbsquare,costhetasquare,Ea,Eb,ma,mb,mc")
assume(Ea>ma)
solution=solve([pasquare*pbsquare*costhetasquare==((-ma^2-mb^2+mc^2)/2
+ Ea*Eb)^2, pasquare==Ea^2-ma^2, pbsquare==Eb^2-
mb^2],pasquare,pbsquare,Eb)
#
But there is the factor sqr
Hello, list, i am solving the simple system of the equations:
#
var("pa,pb,costheta,Ea,Eb,ma,mb,mc")
solve([pa*pb*costheta==(-ma^2-mb^2+mc^2)/2 + Ea*Eb, pa==sqrt(Ea^2-
ma^2), pb==sqrt(Eb^2-mb^2)],pa,pb,Eb)
#
Sage replies:
#
TypeError: unable to make sense of Maxima expression
#
what is wrong?
--
Hi everyone, i use Sage for working with big expressions. To receive
observable output i use latex's package breqn that can automatically
divide the expression into several lines. But there is the problem
with latex() command. For example here is the code(in notebook):
#
var("a,b,c,d,f,g")
expr=
I found that the output can be automatically divided on several lines
by latex with help of package breqn. For example here is the code:
#
var('c')
c=0
for j in range(100):
a=x^j
d=c
c=d+a
pr=latex(c)
latex.add_to_preamble("\usepackage{breqn}")
#
I pressed shift+enter and typed in the
Hello, i want to divide the output of show() function(in notebook) on
several lines. Let's suppose that one has variable "a", a=1+x+x^2+...
+x^100. After one types show(a), Sage returns one long line. As this
line is long, one need to scroll right to see whole line. It is more
convinient to divide
I tried to open search page on my debian lenny with browsers
iceweasel(mozilla firefox) and kazehakase. It gives same mesage as in
your case, while JavaScript is enabled. I do not know why this
happens. But you can use search function on http://sagemath.org/doc/
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I found that it is easy to construct such object as a matrix inside a
matrix. For example here is the code:
#
m00=matrix(SR,2,2)
m01=matrix(SR,2,2)
m10=matrix(SR,2,2)
m11=matrix(SR,2,2)
t=matrix([[m00,m01],[m10,m11]])
#
# now one can assign elements of tensor t in cycle, for example
#
var('v10,v11,
Hello, i need the object, that can be called by indication of his
indeces, and number of this indeces is more than 2. For example in
Sage there is class vector:
#
v=vector([a,b,c])
#
where a,b,c are sumbols.
One can call element of this vector by
#
v[i]
#
where i=0,1,2.
Also exist class matrix:
#
m
Thanks!
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Hello, i need to assign the elements of matrix in the cycle, for
example here is the code (in a notebook):
#
var('a,b,c,d,e,f')
v1=vector([a,b,c])
v2=vector([d,e,f])
v3=matrix(1,3)
j=0
while j<=2:
v3[0,j]=v1[j]*v2[j]
j=j+1
print(v3)
#
I expect that it should give
(a*d,b*e,c*f)
but Sage say
>sage: sum(( m[0,j] * v[j] for j in range(3) ))>a^2 + b^2 + c^2
Thank you very much.
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Hello, i need to sum elements of matriсes and vectors, for example here is
code (in notebook):
#
var('a,b,c,d,e,f,j')
v=vector([a,b,c])
m=matrix([[a,b,c],[d,e,f]])
sum(m[0,j]*v[j],(j,0,2))
#
I expect that it should result in a^2+b^2+c^2, but it gives
"TypeError: cannot evaluate symbolic expressi
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