1. The problem statement, all variables and given/known data From wikipedia Vandermonde matrix is a matrix for all the indices i and j Vij=ai^(j-1). In Matlab the function A = vander(v) returns the Vandermonde matrix whose columns are powers of the vector v, that is, A(i,j) = v(i)^(n-j), where n =length(v). 2. Relevant equations V(i,j)=a(i)^(j-1) A(i,j) = v(i)^(n-j) 3. The attempt at a solution V(i,j)=a(i)^(j-1) is correct. Why? Is the second one wrong?