Suppose that R is a relation. Show that R C dom(R)×ran таn(R).

Advanced Engineering Mathematics
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Chapter2: Second-order Linear Odes
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Exercise 1. Suppose that Ris a relation. Show that RC dom(R)×ran(R).
Transcribed Image Text:Exercise 1. Suppose that Ris a relation. Show that RC dom(R)×ran(R).
Given a relation R, we define two sets, the domain of R and the range
of R as follows:
dom(R) =df {z : for some y, (z, y) E R}
ran(R) =df {z : for some x, (x, z) E R}
Transcribed Image Text:Given a relation R, we define two sets, the domain of R and the range of R as follows: dom(R) =df {z : for some y, (z, y) E R} ran(R) =df {z : for some x, (x, z) E R}
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