MATLAB: Divide all the elements of the column by the first entry

Question

Suppose I have a column vector

X=[2; 3; 4; 5];

I want to divide all elements of the vector by the first entry so that the outcome is

Y=[1; 1.5; 2; 2.5]

What will be a compact way to write this operation?

Answer 1

Do this:

Y = X / X(1)