MATLAB: How to create on an efficient way zeros in a symbolic matrix

Question

hey,

I want to create a matrix/array A with size(n,2) (for arbitrary n) such that

A(:,1) = zeros(n,1)
A([1:n-1],2) = 0;
A(n,2) = x (with x a symbolic, in matlab written as 'sym x' )

How do I do it on a efficient way?

Answer 1

syms x
n=4;
A=sym(zeros(n,2));
A(:,1) = zeros(n,1);
A([1:n-1],2) = 0;
A(n,2) = x;
A