Hi all,

I need your help.

here is a question: function doublethefun should be defined as separate function file and should be so defined like this:

`g = doublethefun(f)`

should be one function-handle for one function-handle f and

`g(x) = 2*f(x)`

The function g should represent also the double of f

I'm quite new in this field and don't know how to do it.

My try looks like this:

`function f = doublethefun(ff, x) f= 2*ff(x);end `

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