MATLAB Mathematics - SERC - Index of

Minimizing Functions and Finding Zeros
You can ask for a tabular display of output by passing a fourth argument
created by the optimset command to fminbnd
x = fminbnd(@humps,0.3,1,optimset('Display','iter'))
which gives the output
Func-count x f(x) Procedure
3 0.567376 12.9098 initial
4 0.732624 13.7746 golden
5 0.465248 25.1714 golden
6 0.644416 11.2693 parabolic
7 0.6413 11.2583 parabolic
8 0.637618 11.2529 parabolic
9 0.636985 11.2528 parabolic
10 0.637019 11.2528 parabolic
11 0.637052 11.2528 parabolic
Optimization terminated:
the current x satisfies the termination criteria using
OPTIONS.TolX of 1.000000e-004
x =
0.6370
This shows the current value of x and the function value at f(x) each time a
function evaluation occurs. For fminbnd, one function evaluation corresponds
to one iteration of the algorithm. The last column shows what procedure is
being used at each iteration, either a golden section search or a parabolic
interpolation.
Minimizing Functions of Several Variables
The fminsearch function is similar to fminbnd except that it handles functions
of many variables, and you specify a starting vector x 0 rather than a starting
interval. fminsearch attempts to return a vector x that is a local minimizer of
the mathematical function near this starting vector.
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