$\"\"$

\

$\"\"$

\

Need to prove $\"\"$ .

\

Let $\"\"$ is a real number such that $\"\"$ .

\

$\"\"$ and $\"\"$ are polynomials and they are continuous functions.

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .