The velocity components of a steady two$-$dimensional flow in the $x-y$ plane are: $u=U_0+bx,v=-by$

Do not concern yourself with units $-$ assume that the constants have appropriate units for dimensional consistency. The pressure field is given as:

$P=P_0-\frac{}{2}[2U_{0}bx+b^2(x^2+y^2)]$

where $P_0$ is the pressure at the origin $(x,y)=(0,0).$ Generate an expression for the rate of change of pressure following a fluid

particle.