Numeric Math Functions Oracle PLSQL

SQL>
SQL> SELECT
  2  POWER(100, 1)  power_1,
  3  POWER(100,0.5) square_root,
  4  POWER(100,-2)  one_ten_thousandth from dual;
   POWER_1 SQUARE_ROOT ONE_TEN_THOUSANDTH
---------- ----------- ------------------
       100          10              .0001