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Let particle P1 have linear motion given by l(t)=(1,0,1)+t(2,1,1) and particle P2 have linear motion given...

Let particle P1 have linear motion given by l(t)=(1,0,1)+t(2,1,1) and particle P2 have linear motion given by l2(t)=(0,2,1)+t(3,1,-3)

a. What time is the distance between P1 and P2 minimul?

b. What is the minimum distance between these two particles?

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