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Alessandro Russo


University of Milano-Bicocca

Last seen: 8 days ago Active since 2021

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Professional Interests: finite element method

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Answered
null() fails for a symbolic numeric 5x5 matrix
Just to inform you that in MATLAB version 9.13.0.2049777 (R2022b) the bug seems to have been solved. Ciao. Ale >> a = str2sym...

1 year ago | 0

| accepted

Answered
null() fails for a symbolic numeric 5x5 matrix
Hi everybody, I filed a bug report (Case Number 05453152). Incoherent results also appear with qr() and simplify: >> [Q,R]=qr(...

2 years ago | 0

Question


null() fails for a symbolic numeric 5x5 matrix
Define the following symbolic 5x5 matrix whose entries are all numbers: a = str2sym('-(sqrt(sqrt(5) + 5)*(69*sqrt(2) - 13*sqrt(...

2 years ago | 4 answers | 0

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answers

Question


Condition number of Hilbert matrix depending on MATLAB build??
Hi, I am a teacher of Numerical Analysis and one of my student noticed that the condition number of the 20x20 Hilbert matrix co...

3 years ago | 1 answer | 0

1

answer