Problems from Even and odd functions

Determine if the following functions are even or odd:

1) $f (x) = 1$

2) $f (x) = x$

3) $f (x) = x^{2}$

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1) The function is pair.

2) Let's see that the function is odd:

$f (x) = - f (- x)$

$x = - (- x)$

3) Let's verify that the function is pair:

$f (x) = f (- x)$

$x^{2} = (- x)^{2} = x^{2}$

imagen

1) Even.

2) Odd.

3) Even.

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