sum in matrix

Hi if i have x matrix from 1 to i have many different value and i want creat a new matrix y where

y(1)=x(1)

y(2)=x(1)+x(2)

y(3)=x(1)+x(2)+x(3)

y(i)=x(1)+...+x(i)

how i can make it thx

Answer 1

[James Tursa]

y = cumsum(x);

[rami]

Thx