9000145410

SubArea: 
Analyzing function behavior
Level: 
A
Project ID: 
9000145410
Source Problem: 
2010012505
Accepted: 
1
Clonable: 
1
Easy: 
0
Identify a true statement about the function f(x)=14x4−x3.
The local minimum of f is at x=3.
The function f has neither local minimum nor local maximum.
The function f has a local minimum at x=0.
The function f has two local extrema. These extrema are at x=3 and x=0.