If I try to search the minimum of the function (that now I use as example) y=(1.2^-x)*sin(x), writing the following code, I obtain a local minimum, depending on the starting point choice.

`fun=@(x) (1.2^-x)*sin(x)x0=4[xmin,fval,exitflag,output]=fminunc(fun,x0)`

xmin =

` 4.532047925295373`

fval =

`-0.430572139266549`

The value is correct looking at the function graph, but how can I find the global minimum? My function to minimize is more complicated, so it has a lot of local minima points, and it is impossibile to guess what is the best starting point

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