1. The stream function for an incompressible, two dimensional flow field is
![254_Equ 4.jpg](https://secure.tutorsglobe.com/CMSImages/254_Equ%204.jpg)
For this flow field, sketch several streamlines.
2. A line vortex of strength K at (x, y) = (0, a) is combined with opposite strength vortex at (0, a): Plot the streamline pattern and find the velocity that each vortex induces on the other vortex.