Solving an equation on MATLAB

Hi Everyone,

How can i solve this equation for Mx in MATLAB. Mx has to be a real root. (nux and gam are known)

nux= ((gam+1)/(gam-1))^(1/2) * atan(((gam-1)/(gam+1))*(Mx^2-1))^(1/2)-atan(Mx^2-1)^(1/2);

I really need to solve this since the rest of the code depends on the solution of this equation.

Thank you.

[Walter Roberson]

Interestingly, Maple 16 solve() generates a large number of false roots given specific nux and gam, such as nux=0 and gam=6/5

Answer 1

[Alan Weiss]

Try fzero. I suggest that you give an initial interval such as [1,1000] because you will get an error if fzero tries a value less than 1 (the square root of a negative number is complex, and fzero deals with real numbers only.

Alan Weiss

MATLAB mathematical toolbox documentation

[Alex Mannings]

thanks .. it worked!