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find positive and nonzero roots of function matlab

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Alper Sahin
Alper Sahin am 11 Dez. 2021
Kommentiert: Walter Roberson am 11 Dez. 2021
sin(x)-0.1*x=0 find positive and nonzero roots . thank you

Antworten (1)

Walter Roberson
Walter Roberson am 11 Dez. 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 Kommentare
Torsten
Torsten am 11 Dez. 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 am 11 Dez. 2021
fzero() can only find one solution at a time; you will need to use several different starting points.

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