Find $(($delw$)/($dely$))\_($x$)$ and $(($delw$)/($dely$))\_($z$)$ at the point $($w$,$x$,$y$,$z$)=(-2,-1,-1,1)$ if w$=2$x$^(2)$y$^(2)+2$yz$-2$z$^(3)$

and x$^(2)+$y$^(2)+$z$^(2)=3.$

$(($delw$)/($dely$))\_($x$)=$p as needed.