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+1 vote
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in Sets, Relations and Functions by (49.1k points)
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Show that the relation xy = -2 is a function for a suitable domain. Find the domain and the range of the function.

1 Answer

+1 vote
by (46.9k points)
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Best answer

xy = – 2 ⇒ y = -2/x 

which is a function 

The domain is (-∞, 0) ∪ (0, ∞) and range is R – {0}

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