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r The best way to picture a vector field is to draw the arrow representing the vector, F (x, y), starting at the

point (x, y) . You obviously can’t do it for all points (x, y) , but you get a pretty good idea what the vector fields look like by doing some points.

HW#4: S k e t c h t h e v e c t o r f i e l d ( ) , , F x y x y x = r .

Notice the different length of vectors? What would the length be? How could we represent it?

Why are the vectors along the line y = x all vertical?

These are a pain to do manually. Technology will come in handy here. But that’s all these vector fields are; that’s all they do; start at the given point and draw the corresponding vector.

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