Two marks example problems II — task. Mathematics State Board, Class 10.

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A relation '

$f$ ' is defined as

$f(x) = x^2 - 2$ where,

$x \in \{$ −2, −1 ,0, 3

$\}$ .

(i) List the elements of '

$f$ '.

The elements of '

$f$ ' are

$\{($ ,

$)$ ,

$($ ,

$)$ ,

$($ ,

$)$ ,

$($ ,

$)\}$

[Note: Enter the elements in ascending order of the preimages]

(ii) Is

$f$ a function?

$f$ is

$1$

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