Tagged Questions
3
votes
2answers
54 views
What free software can I use to solve a system of linear equations containing an unknown?
Question: What free software can I use to solve a system of linear equations $M\mathbf{x}=\mathbf{y}$ where the entries of $\mathbf{y}$ vary with an unknown quantity $n$?
Presumably I could do ...
1
vote
0answers
32 views
Computing Invariant Subspaces of Matrix Groups
Does anyone have a program written in Mathematica (or SAGE or GAP) that computes the invariant subspace lattice of a matrix group?
1
vote
1answer
20 views
What are the explicit expression for this interpolation problem
We want to fit
$f(x) = a_0 + a_1 *x + a_2 * x^2 + ... + a_n * x^n$
to the data $(x_i,f(x_i))$ for $i = 0 ... n.$
It will give rise to the following system
$ A a = b $
Here $ a = [ a_1 a_2 a_3 ...
1
vote
0answers
51 views
Flatten kronecker product in CAS?
I am a new user of Maxima, and I need to trace the elements of a big messy kronecker product of symbolic matrices.
I tried the following to get my feet wet, but I don't get a simple, flat matrix --
...
0
votes
2answers
64 views
solving a matrix equation $X-I=a \cdot (X\cdot U^T + U \cdot X)$
I am trying to solve the $n \times n$ diagonal matrix $X$ in the following equation:
$$X-I=a \cdot (X\cdot U^T + U \cdot X)$$
where $0<a<1$ is a given scalar, $U$ is a $n \times n$ given ...
2
votes
1answer
5k views
Using Wolfram Alpha For Solving A System Of Equations
How do i input the below system of equations in wolfram alpha in order to solve for the unknowns and plot them? If i just say "solve" and input these equations one after the other with a simicolen ...
