BABs were born on 2/9/2005.

During class on 2/8/2007, GDT mentioned that BABs had a birthday on 2/9/2007. An observation was made that 2/9/07 was a BAD because two subtracted from nine equals seven. This BAD discovery prompted GDT to see if BAB birthdays from 2005 to 2015 were BADs.

```   2/9/05 -- sqrt(9) + 2 = 5         [BABs were born]
2/9/06 -- sqrt(9) x 2 = 6         [BABs turn one]
2/9/07 -- 2 + 7 = 9               [BABs turn two]
2/9/08 -- 2^sqrt(9) = 8           [BABs turn three]
2/9/09 -- sqrt(9)^2 = 9           [BABs turn four]
2/9/10 -- sqrt(9) - 2 = log(10)   [BABs turn five]
2/9/11 -- 2 + 9 = 11              [BABs turn six]
2/9/12 -- sqrt(9)! x 2 = 12       [BABs turn seven]
2/9/13 -- sqrt(13 - 9) = 2        [BABs turn eight]
2/9/14 -- ???                     [BABs turn nine]
2/9/15 -- ???                     [BABs turn a decade]
```

`[extra effort]` Check BAB birthdays for the years 2016 through 2038.

```   2/9/16 -- ???
2/9/17 -- ???
2/9/18 -- ???
...
2/9/25 -- ???                     [BABs turn twenty]
...
2/9/36 -- ???
2/9/37 -- ???
2/9/38 -- ???
```

`[computing]` Write a program to test a date for being a BAD.

```   # returns true if "date" is a BAD; false otherwise