Polynomial

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ali Abusnina
ali Abusnina 2011-12-5
#How can I write a polynomial function in matlab that can take 3 inputs to predict a forth element?
Thanks

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Steven
Steven 2011-12-5
f = @(x,y,z)(x+y+z);
or
f = inline('x+y+z', 'x', 'y', 'z');
or
function f = myfun(x,y,z)
f = x+y+z;
return
give all
>> f(1,1,1) = 3
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ali Abusnina
ali Abusnina 2011-12-5
Thanks for your help. do you mean my prediction will be just based on summing up the prevoius three inputs? is there any coeffecients in the functions to be optimized?
Steven
Steven 2011-12-5
you can write any function you want - I just showed you some basic examples - such as f = @(x,y,z)(2*x-4*y+pi*cos(z)). As I understand, you want to optimize your function, so you shold take a look at the optimization toolbox.

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