Let X = {1, 2, 3} and Y = {4, 5}. Find whether the following subsets of X × Y are functions from X to Y or not. f = {(1, 4), (1, 5), (2, 4), (3, 5)}

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Harshit Singh · Answer

Dear Student

Given, X = {1, 2, 3} and Y = {4, 5}
So, X × Y = {(1, 4), (1, 5), (2, 4), (2, 5), (3, 4), (3, 5)} (i) f = {(1, 4), (1, 5), (2, 4), (3, 5)}

f is not a function as f(1) = 4 and f(1) = 5
Thus, pre-image ‘1’ has not unique image.

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Let X = {1, 2, 3} and Y = {4, 5}. Find whether the following subsets of X × Y are functions from X to Y or not. f = {(1, 4), (1, 5), (2, 4), (3, 5)}

Let X = {1, 2, 3} and Y = {4, 5}. Find whether the following subsets of X × Y are functions from X to Y or not.
f = {(1, 4), (1, 5), (2, 4), (3, 5)}

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Let X = {1, 2, 3} and Y = {4, 5}. Find whether the following subsets of X × Y are functions from X to Y or not. f = {(1, 4), (1, 5), (2, 4), (3, 5)}

Let X = {1, 2, 3} and Y = {4, 5}. Find whether the following subsets of X × Y are functions from X to Y or not. f = {(1, 4), (1, 5), (2, 4), (3, 5)}

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Let X = {1, 2, 3} and Y = {4, 5}. Find whether the following subsets of X × Y are functions from X to Y or not.
f = {(1, 4), (1, 5), (2, 4), (3, 5)}