Question: For P = (a, b), we define the unit radial vector field based at P: (a) Verify that e P is a unit vector field.

For P = (a, b), we define the unit radial vector field based at P:

ep = (x-a,y - b) (x-a)+(y-b)

(a) Verify that eP is a unit vector field.
(b) Calculate eP(1, 1) for P = (3, 2).
(c) Find a potential function for eP.

ep = (x-a,y - b) (x-a)+(y-b)

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