MATLAB: Function file for maclauring series approximation

function file

My function file: function [approx] =cos1(x,n) %Calculates the Malcurin series approximation to cos(x) approx=0; for i=0:n-1 approx=approx+(1)^i*x^(2*i)/factorial(2*i) end
My command window: approx1=cos1(pi/3,1)
approx =
     1
approx1 =
     1
(How come i generated the value of one term , it comes up two variable with same value? How to minimize it to one variable?)

Best Answer

Without a semi-colon a line of code will print its output:
function [approx] =cos1(x,n)
%Calculates the Malcurin series approximation to cos(x)
approx=0;
for i=0:n-1
    approx=approx+(1)^i*x^(2*i)/factorial(2*i);
end                                           ^ you forgot this!
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