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Mathematics, 26.09.2019 12:30 Jael2

(a) give an example of three planes in r^3 that have a common line of intersection. justify your answer.

(b) give an example of three planes in r^3 that intersect in pairs but have no common point of intersection. justify your answer.

(c) give an example of three planes in r^3 that intersect in a single point. justify your answer.

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