1. The problem statement, all variables and given/known data I need to analyze these pictures for my homework and find out the curl of the vector field at the point (red) on the picture. 2. Relevant equations http://i1242.photobucket.com/albums/gg525/sjrrkb/ScreenShot2012-11-26at61615PM.png 3. The attempt at a solution basically I can calculate curl and divergence and evaluate them mathematically...but when it comes to analyzing a picture and determining the curl at a given point on a vector field I am totally lost. Any assistance....in the form of answers, places I can go to get help, or just suggestions would be appreciated.