summing functions handles in matlab
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Published on 2011-01-16T09:37:56Z
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2011/01/16
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Hi
I am trying to sum two function handles, but it doesn't work.
for example:
y1=@(x)(x*x);
y2=@(x)(x*x+3*x);
y3=y1+y2
The error I receive is "??? Undefined function or method 'plus' for input arguments of type 'function_handle'."
This is just a small example, in reality I actually need to iteratively sum about 500 functions that are dependent on each other.
EDIT
The solution by Clement J. indeed works but I couldn't manage to generalize this into a loop and ran into a problem. I have the function s=@(x,y,z)((1-exp(-x*y)-z)*exp(-x*y));
And I have a vector v that contains 536 data points and another vector w that also contains 536 data points. My goal is to sum up s(v(i),y,w(i)) for i=1...536 Thus getting one function in the variable y which is the sum of 536 functions. The syntax I tried in order to do this is:
sum=@(y)(s(v(1),y,z2(1)));
for i=2:536
sum=@(y)(sum+s(v(i),y,z2(i)))
end
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