Can you show your hours of working?
Spoiler:
I'm numbering you're problems:
1. 2.
3. 4.
5. 6.
7.
1.) Note that
Spoiler:
--------
2.) This function is continuous (from the right) at .
Spoiler:
--------
3.) Just plug it in.
--------
4.) Start by factoring the numerator and see where that gets you.Spoiler:
--------
5.) Same strategy as the last one.
--------
6.) As gets small, gets really big, so .
--------
7.) Same method as (4) and (5).