Just had an exam where the question was roughly:
Using an epsilon delta definition of limit, prove that the limit
I am not very confident with proving the limit definition of quadratics..
So I folded and decided to do it by two sided limit.
For an , there exists a , such that :
Left hand limit:
Right hand limit:
There exists an and a on both sides of 1, which approach the value of 4.
Thefore the limit does exist, and it is 4. ▫
Pretty sure I messed up monumentally.. Linear functions are so much easier to prove than quadratics. :/