For each of the vector fields below, decide if they have a nonzero or zero curl at the origin. Each vector field is shown in the -plane; they have no -component and are independent of . Note that the vector fields are shown with a dot at the tail of each vector.
graph of the first vector fieldgraph of the second vector fieldgraph of the third vector field
(a)(b)(c)
Vector field (a) has curl at the origin.
Vector field (b) has curl at the origin.
Vector field (c) has curl at the origin.

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