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How can I find solutions included in an interval ??

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I am trying to solve an equation of one unknown Z using fsolve.
Let us say that the value of the guess for Z is 610 and that I am using the writing: fsolve(@eqns,610).
Which writing should I use to find only the solutions Z which are included in the interval [600 670] ??

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Accepted Answer

Walter Roberson
Walter Roberson on 18 May 2012
fzero(@eqns, [600 670])
Notice that is fzero, not fsolve.
Warning: in order for fzero to work on an interval, the equation evaluated at the two endpoints must have different signs.

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kamal kiki
kamal kiki on 18 May 2012
Thank you very much Walter Roberson.
Really the problem of sign difference is a big problem.
Is there any solution to that ???

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