Consider a flow whose velocity components is the XY Cartesian celerence frame are

$u=4y$:$,y=-12x^{2}y$

You pre required to

a$)$shetch the flow $($draw at least $3$ strearmines to teprevent the flow field:

b$)$ determine for which values of $x$ and $y$ the flow is irrotational and does net undergo strain