% Practical 4: sub2p4.m
% Subject 2:  4.1-4.5
1+2
3-4
4*5
a=10;b=20;
a/b
a\b
b/a
1-2-3
(1-2)-3
1-(2-3)
+5
++5
-5
--5
-------5
5 ----- 5
2^4
2^2^2^2
