Checkpoint 2 Answers

1. `ftext[(]0text[)]=0`, `f'text[(]0text[)]=2/sqrt(pi)`, `f''text[(]0text[)]=0`, `f'''text[(]0text[)]=-4/sqrt(pi)`, and `f^((4))text[(]0text[)]=0`.

2. `2/sqrt(pi) t-2/(3 sqrt(pi)) t^3`