\"\"

\

The complex conjugate of \"\" is \"\".

\

Find \"\".

\

\"\"

\

Hence for any value \"\", the value of \"\" is a real number.

\

Find \"\".

\

\"\"

\

Hence for any value \"\", the value of \"\" is a real number.\"\"

\

For any value \"\",  \"\" and \"\" are real number.