A stream function is given by $22$ x $24$ xy t y $.$ Determine the flow rate $($with direction of

flow$)$ per unit width across the path ABC shown in the figure below at t$=2.$ A stream function is given by $=x^2+2xy-4t^{2}y.$ Determine the flow rate $($with direction of

flow$)$ per unit width across the path ABC shown in the figure below at $t=2.$