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So in an example question I'm lookin at finding the work between 2 points on a line.

The points are A(1, 0, 0) and B(0, 1, (pi^3)/8)

The vector of the line joining these points is then given as:

r = i + t(-i + j + [(pi^3)/8]k )

Is that correct? I can't see how that equation arises? It could just be a typo, or I'm just having a stupid day!!

Cheers!!