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David Craven


Last seen: environ 3 ans il y a |  Actif depuis 2017

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Question


I am trying to approximate the global minimum of a function within a given domain, and the index of that global minimum.
Inputs: Func - an arbitrary function. eg. @(x) x.^2 + 4 xStart - The first x value in the function domain xEnd ...

environ 7 ans il y a | 1 réponse | 0

1

réponse

Question


identity matrix what am i doing wrong
The singularitytest function will test whether a matrix is singular. If it is, the output should be 1. Otherwise, the output sho...

environ 7 ans il y a | 1 réponse | 0

1

réponse

Question


I run this identity test and get this response....what am I doing wrong
function result = singularitytest(A) d = det(A); c = cond(d) <= 1e-10; end Output argument "result" (and may...

environ 7 ans il y a | 1 réponse | 0

1

réponse

Question


how do i use the in-built inv function to calculate a matrix inverse and then calculate A-1A and AA-1.
how do i use the in-built inv function to calculate a matrix inverse and then calculate A-1A and AA-1.

environ 7 ans il y a | 2 réponses | 0

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Question


how do i extract every 10th column from a matrix
using selectcolumn

environ 7 ans il y a | 1 réponse | 0

1

réponse