If `y= |(p,q,r),(u,v,w),(l,m,n)|` then
`(dy)/(dx) = |((dp)/(dx) , (dq)/(dx) , (dr)/(dx)),(u,v,w), (l,m,n)| + | (p, q, r), ((du)/(dx) , (dv)/(dx) , (dw)/(dx)), (l,m,n)| +| (p,q,r), (u,v ,w), ((dl)/(dx), (dm)/(dx) , (dn)/(dx))|`
If `y= |(p,q,r),(u,v,w),(l,m,n)|` then
`(dy)/(dx) = |((dp)/(dx) , (dq)/(dx) , (dr)/(dx)),(u,v,w), (l,m,n)| + | (p, q, r), ((du)/(dx) , (dv)/(dx) , (dw)/(dx)), (l,m,n)| +| (p,q,r), (u,v ,w), ((dl)/(dx), (dm)/(dx) , (dn)/(dx))|`