Here's the question you clicked on:
Tainted
Medal will be given Graph the function f(x) = x4 – 7x3 + 12x2 + 4x – 12 using graphing technology and describe the end behavior
hmm start with 1st derivative test
http://www.wolframalpha.com/input/?i=+f%28x%29+%3D+x^4+%E2%80%93+7x^3+%2B+12x^2+%2B+4x+%E2%80%93+1
You notice that the ends tend to seem towards infinity, so you could find lim x->infinity and lim->(-infinity) and see that it equals infinity
to describe the end behaviour