Error while mutliplying functions.

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Daniel Caliari
Daniel Caliari le 21 Jan 2017
Commenté : Daniel Caliari le 21 Jan 2017
I'm trying to multiply these functions:
a = x^2
b = x
Obviously, It should give me: x^3
But when I write the code:
a = @(x)x^2;
b = @(x)x;
c = a*b;
I got the error: Undefined operator '*' for input arguments of type 'function_handle'.
What am I doing wrong?

Réponse acceptée

Stephen23
Stephen23 le 21 Jan 2017
Modifié(e) : Stephen23 le 21 Jan 2017
You cannot multiply function handles. You can either:
1) evaluate the function handles for some value/s, and multiply their outputs:
>> a(2).*b(2)
ans =
8
2) create a new function (which can be evaluated later):
>> c = @(x)a(x).*b(x);
>> c(2)
ans =
8
  1 commentaire
Daniel Caliari
Daniel Caliari le 21 Jan 2017
I thought It would work same way the symbolic notation and that was my mistake.
Thanks!

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