I use matlab for excercises on the university. I declare a function 'benadering_four' and when I ask for benadering_four(0) (so 0 put in the function) then it works but when I put a vector in the function (in the code, benadering_four(xx) ) then it gives me the error:
*Error using * Inner matrix dimensions must agree.
Error in @(y)[1,cos([1:floor(n/2)]*y),sin([1:floor(n/2)]*y)]
Error in @(y)Fourier(pi*y)*coef_four*
xx = -1:0.001:1;
n = 9;
coef_four = 1/pi*[pi*atan(5)/5; 1.08104; .552133; .30444; .157123; 0; 0; 0; 0]
Fourier = @(y) [1 cos([1:floor(n/2)]*y) sin([1:floor(n/2)]*y)]
benadering_four = @(y) Fourier(pi*y)*coef_four
I doesn't understand why it works with an number and why it doesn't work with a vector. Can someone help me?