Suppose that l1(t) = ta + b1 and l2(t) = ta + b2 are parallel lines in either R2 or R3
Chapter 1, Problem 36(choose chapter or problem)
Suppose that l1(t) = ta + b1 and l2(t) = ta + b2 are parallel lines in either R2 or R3. Show that the distance D between them is given by D = a (b2 b1) a . (Hint: Consider Example 7.)
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