Vector Field Homework: Learn What's Involved

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athrun200
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Homework Statement



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Homework Equations





The Attempt at a Solution


What's surprise?
And is my work correct?


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hunt_mat said:
You have a problem: [itex]\mathbf{r}=x\mathbf{i}+y\mathbf{j}+z\mathbf{k}[/itex].

r is the radius from centre, isn't it?