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find positive and nonzero roots of function matlab

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Alper Sahin
Alper Sahin el 11 de Dic. de 2021
Comentada: Walter Roberson el 11 de Dic. de 2021
sin(x)-0.1*x=0 find positive and nonzero roots . thank you

Respuestas (1)

Walter Roberson
Walter Roberson el 11 de Dic. de 2021
f = @(x) sin(x) - x/10;
fplot(f, [-11, 11]);
yline(0)
You can see from this that there are 7 solutions. You can read the approximate positions from the graph, and use fzero() to find the exact locations.
  3 comentarios
Torsten
Torsten el 11 de Dic. de 2021
As Walter pointed out, you will have to choose the starting point for fzero approximately at the position where the zero is located. This position can be seen from the above graph.
Walter Roberson
Walter Roberson el 11 de Dic. de 2021
fzero() can only find one solution at a time; you will need to use several different starting points.

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