Construct a limit evaluation problem with an answer of 1. (do not use L'Hospital's rule)

Don't understand how I got it wrong.

14. Given the following graph of the function y= f(x), construct the graph of the function y= f"(x). (0,2), (1,3), (2,5), (3,9), (-1,1.5) -8 7- -5 -3 -9 -8 -7 -6 -5 -4 -3 -2 2 6 -2 Solution: https://youtu.be/plmnlQ2nb3g PRESS

Let f(x) = x³ 3x² - 1. - What is the limit as x approaches infinity? Limit is: What is the limit as x approaches negative infinity? Limit is: