math (Matrix algebra)
posted by munir .
solve the equations by using
a) the adjoint matrix
b) elementary row operations
i) x+y+z=6
2xy+z=3
x+4yz=6
ii) 3p3q+r=1
3p+5q2r=1
p2q+r=3
iii)12a+b+17c=14
2ab+3c=5
8a+b13c=3
thanks sir/madam

Enter your data at
http://www.gregthatcher.com/Mathematics/GaussJordan.aspx
to see all the details