% using fzero

% Simplest example specifying initial guess

f = @(x) x - exp(-x);
fzero(f, 0.6)

% Example using a sign-changing interval

f = @(x) x - exp(-x);
fzero(f, [0.5,0.6])

% Changing the tolerance

options = optimset('TolX', 1e-10);
fzero(f,1,options)

% Example which displays information on iterations

opt = optimset('Display','iter');
f = @(x) x - exp(-x);
fzero(f, 0.6, opt);

% Example with a parameter

c = 2
f = @(x) c*x - exp(-x);
fzero(f, 0.6)

% Another way to do it

f = @(x,c) c*x - exp(-x);
fzero( @(x) f(x,2), 0.6)