Question: Show that the lines r 1 (t) = (1, 2, 2) + t(4, 2, 1) and r 2 (t) = (0, 1, 1) + t(2,

Show that the lines r1(t) = (−1, 2, 2) + t(4, −2, 1) and r2(t) = (0, 1, 1) + t(2, 0, 1) do not intersect.

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