Math Forum / Math Software / Maple / December 2006

Pleae can someone help
I have the following differential equation for simple harmonic
oscillation:-
deq:= -(k*x(t)/m + diff(x(t),t$2)=0;

I found the following strange thing regarding "maple" and "sym" function:
"k" is an integer:
"a" is an array of symbolic numbers:
Code (1):

The following Matlab code snippet constructs a symbolic object "temp" for
later use in symbolic computation:
temp=sym(['binomial(', num2str(k),',',num2str(m),')'])
here "k" and "m" are variables in Matlab.

I have a problem to solve.
Let x(z)= a4*z^4+a3*z^3+a2*z^2+a1*z+1 be a polynomial in z.
I want the formula of the j'th derivative in z of (x(z))^(1/2). I think
this kind of problems should have been solved. But I do not

I need to efficiently handle two tasks at the same time: on one hand, I need
to do some middle school level computation,
such as
A_{1, 1} = 2;

http://www.cambridgepsychology.com/maths/
We are a research group from the Department of Experimental Psychology,
specialising in the on-line testing of cognitive styles. This includes
profiling people's interests and preferences.

Problem: If I start the programm couples with n =300
        sometimes it works and othertimes it doesn´t.
        If n is smaller, it seems to work most of the times -
        but not always.

Merry Christmas!
I got an equation to solve. Please help me!
z^6*q^2-4*z^5*t*q^2+(2*t^2*q+2*q^2+3*t^2*q^2)*z^4+(-2*t*q^2-2*t*q-2*t*q-2*t­)*z^3+(3*t^2+2+2*t^2*q)*z^2-4*t*z+1
where 0<=q < 1 and -1 <= t <= 1 are parameters.

I got an equation to solve.
z^6*q^2-4*z^5*t*q^2+(2*t^2*q+2*q^2+3*t^2*q^2)*z^4+(-2*t*q^2-2*t*q-2*t*q-2*t)*z^3+(3*t^2+2+2*t^2*q)*z^2-4*t*z+1
where 0<=q and -1 <= t <= 1 are parameters.
Could someone help me to solve it with maple? Thanks!

Hello camm,
I tried to export my maple worksheet (containing some matrix
calculations and a proc) to latex. This works fine. But I get erros when
compiling the exported tex-file:

Is there a way to convert the expression 2*cos(x)^4-2*cos(x)^2+1 to an
equivalent expression in terms of the sine function?
Thanks in advance for any and all help,
Ken

Does anyone see what goes wrong here?
Wa:= wd-> 2*tan(wd/2):
Wd:= wa-> 2*arctan(wa/2):
Bd:= (ba,wa)-> log[2]( Wd(wa*2^(ba/2)) / Wd(wa*2^(-ba/2)) ):

Anyone know how to generate random square matrices mod p so that the rank is
fixed to, say, R AND there are absolutely no permutations (row exchanges)
involved in getting the REF form? Needn't be RREF. Oh, and using integers,
not rationals.

Dear Maple Gurus,
I have a set of linear equations in matix form which are dependent.  I
would like to
eliminate the dependent rows.  For example

I have a list of polynomials and I want to write them as
content*primpart without evaluating the product again. That is,
2*x+2*y   ------>   2*(x+y)
I haven't been able to find a way to do this: either I don't get