$\"\"$

The equation is $\"\"$ .

Let the functions are $\"\"$ and $\"\"$ .

Draw a coordinate plane.

Graph the function $\"\"$ .

$\"\"$

Graph the function $\"\"$ .

$\"\"$

Observe the above two graphs :

The graphs not the same.

So, the equation does not appears to be an identity.

$\"\"$

The equation $\"\"$ does not represents an identity.