Is it a mistake that the function sum?
1 visualización (últimos 30 días)
Mostrar comentarios más antiguos
Please see the follow code:
N=3;
sum(sum(eye(N)-ones(N,N)/N))
The MATLAB answer is 3.3307e-16, but the right answer is 0.
But it is true if N is 2, 4, 8 as follows:
N=2;
sum(sum(eye(N)-ones(N,N)/N))
N=4;
sum(sum(eye(N)-ones(N,N)/N))
N=8;
sum(sum(eye(N)-ones(N,N)/N))
These right answers are 0, and the MATLAB answer is 0 too.
0 comentarios
Respuestas (1)
James Tursa
el 19 de Feb. de 2020
Editada: James Tursa
el 19 de Feb. de 2020
Welcome to the world of floating point arithmetic.
0 comentarios
Ver también
Categorías
Más información sobre Argument Definitions en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!