Question 473681
<pre>
{{{matrix(7,3,
(r+s)/r=3,    "",              (t+r)/t=5,
r/r+s/r=3,    "",              t/t+r/t=5, 
1+s/r=3,      "",               1 + r/t=5,
s/r=2,        "",                 r/t=4,
 "",              expr(s/r)expr(r/t)=2*4,   "",
 "",             expr(s/cross(r))expr(cross(r)/t)=8, "",
 "",               s/t = 8,             "")}}}

Edwin</pre>