Level:
Project ID:
2010001703
Source Problem:
Accepted:
0
Clonable:
1
Easy:
0
Find the intervals where the following function is an increasing function.
\[
f(x) = \frac{4+x^{2}}
{-4x}
\]
\([ - 2,0)\) and
\((0,2] \)
\([ - 2,2] \)
\((-\infty ,-2] \) and
\([2,\infty) \)
\([ 2,\infty) \)