To Find the Potential Function for a given Vector Field such as the one at http://tutorial.math.lamar.edu/Solutions/CalcIII/ConservativeVectorField/Prob4.aspx
use the Vector Calculus Made Easy app at https://www.tinspireapps.com/?a=VCME , go to option 3,4
and enter the Vector Field as:
Since the 2 partial derivatives match the Vector Field is conservative
and the Potential Function is found as shown below:
