Using 'subs' in parallel for more than one equation

I have 5 equations in an array: E = [E1;E2;E3;E4;E5]. Each equation is made of symbolic variables x1,y1. I now want to substitute these variables with x2,y2. Right now, I have this simple loop:

 for i = 1:5
E(i) = subs(E(i),[x1,y1],[x2,y2]);
end

I was wondering if these substitutions could be carried out simultaneously for each equation, since they are independent of each other. Can I use parfor here, and if so, how should I modify my code?

Answer 1

[Piotr Balik]

Repmat is one of solutions:

E = subs(E,repmat([x1 y1],5,1),repmat([x2 y2],5,1))

Where 5,1 are 5-row 1-column copies of array [x1 y1].

[Tejas Adsul]

This worked faster than the for loop. However, I tried removing the for loop:

 E = subs(E,[x1,y1],[x2,y2]);

This works faster than repmat.