BASIC
(Page 3)
COMMAND  What it Does 

x = zeros(100,2);
 Makes x a 100 row by 2 column matrix
with all zeros

y = ones(20,20);
 Makes y a 20 row by 20 column matrix
with all ones

z = 0:.1:10;
 Puts the values of 0,.1,.2,...10
into the variable z

a = z.^2;
 The .^2 operator will take each individual element
of z and square it, so a will contain
0,.01,.04,...100

b = a.*z;
 The .* operator will take each individual element
of a and multiply it by the same element in
z . The equivalent code in BASIC would befor i=1 to 101 b(i) = a(i)*z(i) next i

C = rand(3,3); D = ones(3,3); E = C*D;  The first command makes C a
3by3 matrix of random numbers between 0 and 1.
Matrix D will be all ones, and the matrix
E will be the matrix product of these two matrices
(so each element of the top row of E will be the sum of the
first row of C .

Consider a ball dropped from a window of a tall building and another ball thrown downwards at 2.5 m/s from a window 1 floor (3 meters) higher up. This program will plot the heights of the two balls as a function of time.
t = 0:.01:2; g = 9.8; y1 = 0.5*g*t.^2; y2 = 0.5*g*t.^2  2.5*t + 3; plot (t,y1,'g'); plot (t,y2,'r.'); xlabel ('Time (Seconds)'); ylabel ('Distance Fallen (Meters)'); title ('Height of Falling Objects');
http://physics.gac.edu/~huber/matlab/mtlbasi3.html