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Set of ordered pairs a function ? If so, examine whether the mapping is injective or surjective :{(a, b) : a is a person, b is an ancestor of a}

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प्रश्न

Set of ordered pair of a function ? If so, examine whether the mapping is injective or surjective :{(ab) : a is a person, b is an ancestor of a

योग
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उत्तर

g = {(a, b) : a is a person, b is an ancestor of a}
Since, the ordered map (ab) does not map 'a' - a person to a living person.
So, g is not a function.

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अध्याय 2: Functions - Exercise 2.1 [पृष्ठ ३२]

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आर.डी. शर्मा Mathematics Volume 1 and 2 [English] Class 12
अध्याय 2 Functions
Exercise 2.1 | Q 9.2 | पृष्ठ ३२

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