Question 480500
  <pre><font face = "Tohoma" size = 4 color = "indigo"><b> 
Hi,
{{{(matrix(3,3,a1,b1,c1,a2,b2,c2,a3,b3,c3))}}} = {{{(matrix(3,3,-4,-3,3,5,1,-3,7,-1,2))}}} 
  {{{(matrix(3,3,a1,b1,c1,a2,b2,c2,a3,b3,c3))}}}=  a1(b2c3-c2b3) - b1(a2c3-c2a3) + c1(a2b3-b2a3) 
             = -4[1*2-(-1*-3)] - [-3(5*2-(-3*7)] + 3[5*-1 - (1*7)]
             = 4  + 93 - 36 = 61