any help would be much appreciated.

consider an inviscid fluid with the velocity field:

1.u(x,y,x,t)=(1,z,y)

2.u(x,y,z,t)=(0,0,w) x (x,y,z)

Find the pressure of the fluid as a function of the densitypand the gravitational acceleration g in each case, if pressure at the origin is Po.