Show that the lines r (i +j -k) + (3i – ) and r =(4 i – k) + u(2 i + 3 k) are


Show that the lines r (i +j -k) + (3i – ) and r =(4 i – k) +
u(2 i + 3 k) are coplanar. Also, find the plane containing these two lines.​


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