# Even or Odd?!

Algebra Level 3

$$\text{Find whether the following function is even or odd?}$$

$f(x) = log( x + \sqrt{x^{2} + 1} )$

NOTE-

1) An $$\textbf{even function}$$ is that function for which $f(x) = f(-x)$

2) An $$\textbf{odd function}$$ is that function for which $f(x) = -f(x)$

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