Line Integrals Across Line Segment
I have a problem where I need to parametrize a line segment in order to evaluate a line integral, but I don't know how to do that. The problem is as follows:
"Evaluate , where is the line segment joining to ."
The book has a small example about the parametrization of line segments, but I can't follow it. Can anyone give a blow-by-blow description of how to use the equation: where ?
I understand that and are just the two points, initial and final, but how do you plug them into the previous formula to get and ?
Thanks for your consideration,