How to use Matlab to write a function

Answer 1

[Stelina]

a short .mfile with the solution

Answer 2

[Star Strider]

Your detailed solution is waiting for you here.

[Tauheed Baukman]

I love this answer!

[Star Strider]

Thank you!

[NIANNIAN]

To clarify, I did not ask for answer here. I apologize that there is something wrong with the way I post my questions here. I post the question just because to explain what I was stuck with. I did put my effort in my homework!

The following is my code: function the_maclaurin_series_expansion x=linspace(0,(3*pi)/2); y=cos(x);

macxp=1-x.^2/factorial(2)+x.^4/factorial(4)-x.^6/factorial(6)+x.^8/factorial(8)

plot(x,macxp) hold on plot(x,y,'--') hold on xlabel('x'); ylabel('cos(x)'); legend('Series expansion','True'); title('Series expansion of the cosine function'); grid on hold off

er=(sum(abs(y-macxp)))/sum(abs(y)) disp(er)