$\"\"$

Consider three function $\"\"$ , $\"\"$ and $\"\"$ .

If $\"\"$ for all $\"\"$ in an open interval containing $\"\"$ , except possibly at $\"\"$ itself and if $\"\"$ then $\"\"$ exists and is equal to $\"\"$ .

$\"\"$ .

$\"\"$

Squeeze theorem:

If $\"\"$ for all $\"\"$ in an open interval containing $\"\"$ , except possibly at $\"\"$ itself and if $\"\"$ then $\"\"$ exists and is equal to $\"\"$ .