linear-algebra

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Maple don't solve equations

I am trying to solve theseequations: S := solve({PVA1+PSA1+PPA1=1,开发者_如何转开发PVA2+PSA2+PPA2=1,PVA3+PSA3+PPA3=1,PVA1*0.2+PVA2*0.5+PVA3*0.3=0.3,PSA1*0.2+PSA2*0.5+PSA3*0.3=0.2,PPA1*0.2+PPA2*0.5+PP[详细]

2023-02-15 07:14 分类：问答
Convolution along one axis only

I have two 2-D arrays with the same first axis dimensions. In python, I would like to convolve the two matrices along the second axis only. I would like to get C below without computing the convolutio[详细]

2023-02-15 05:45 分类：问答
My for loop doesn't work?

I\'m creating a program that solves linear systems using the Gauss-Jordan method by following this algorithm:[详细]

2023-02-14 04:45 分类：问答
Perform a series of outer products using tracedot in scipy

To perform an outer product between two vectors in Python (scipy/numpy) you can use the outer function, or you can simply use dot 开发者_运维百科like this:[详细]

2023-02-13 06:51 分类：问答
LAPACK SVD (Singular Value Decomposition)

Do yo know any example to use LAPACK To calcu开发者_运维问答late SVD?The routine dgesdd computes the SVD for a double precision matrix.Do you just need an example of how to use it?Have you tried readi[详细]

2023-02-12 13:36 分类：问答
Most efficient matrix inversion in MATLAB

When computing the inverse for some square 开发者_运维问答matrix A in MATLAB, using Ai = inv(A)[详细]

2023-02-11 02:45 分类：问答
Efficient algorithm to copy tiles in a big matrix

I have N square matrices all of the same size MxM that have to be copied in a matrix that contains NxN matrices, arranged in a symmetrical way. The two halves, upper and lower, contain transposed vers[详细]

2023-02-10 20:40 分类：问答
Matlab Principal Component Analysis (eigenvalues order)

I want to use the \"princomp\" function of Matlab but this function gives the eigenvalues in a sorted array. This way I can\'t find out to which column corresponds which eigenvalue.[详细]

2023-02-10 14:17 分类：问答
Fast linear system solver for D? [closed]

Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers.[详细]

2023-02-09 21:37 分类：问答
Transform scaling doesn't seem to work

I am implementing a column-major transformation matrix that looks something like this: ----------||------------||------------|[详细]

2023-02-08 21:06 分类：问答