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in Sets, relations and functions by (15 points)

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y = {x2 + 1/2} 0 \(\leq\) x \(\leq\) 2

 0 \(\leq\) x \(\leq\) 2

⇒ 0 \(\leq\) x2 \(\leq\) 4

⇒ 1/2 \(\leq\) x2 + 1/2 \(\leq\) 4 + 1/2

⇒ 0.5 \(\leq\) x2 + 1/2 \(\leq\) 4.5

Hence, integral values of x2 + 1/2 is 1, 2, 3 and 4.

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