Question 4

Find the shortest distance between lines ˆ ˆˆ ˆ ˆ ˆ6 2 2 ( 2 2 )= + + + λ − +/arrowrightnospr i j k i j k and ˆ ˆˆ ˆ ˆ4 (3 2 2 )= − − + µ − −/arrowrightnospr i k i j k .