MATLAB: Create a vector u of dimension 10 with elements un = 4(−1)n 2n+1 . Compute the sum of all the elements and comment.

Question

Create a vector u of dimension 10 with elements u(n) = 4*(−1)n/ (2n+1) .

To create the vector I created R=zeros(1,10). then did:

for n=1:10; R(1,n)=R + (4*(-1)^n)/(2*n+1); end

Result gives R=[0,0,0,0,0,0,0,0,0,0]

Answer 1

n=1:10;
u=4*(-1).^n./(2*n+1);

Best wishes

Torsten.