2010012202

Level: 
Project ID: 
2010012202
Source Problem: 
Accepted: 
0
Clonable: 
1
Easy: 
0
Find all the values of the real parameter \( a \) such that \( f(x)=ax^2+2 \) is increasing on \( (0;\infty) \).
\( a\in(0;+\infty) \)
\( a\in(-\infty;0) \)
\( a\in [ 2;+\infty) \)
\( a\in(-\infty;2 ] \)