Two marks exercise problems I — task. Mathematics State Board, Class 10.

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Let

$f = \{(x, y) | x, y \in \mathbb{N} \ \text{and} \ y = 2x\}$ be a relation on

$N$ . Find the domain, co-domain, and range. Is this relationship a function?

Domain

$=$

$\{i, i, i, i, ...\}$

Co-domain

$=$

$\{i, i, i, i, ...\}$

Range

$=$

$\{i, i, i, i, ...\}$

$\mathbb{R}$ is .

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