Level:
Project ID:
2010016405
Source Problem:
Accepted:
0
Clonable:
1
Easy:
1
In the following list identify a true statement about the function
\(f(x) =\cos x\), where
\(x\in \left[ -\frac{\pi }{2}; \frac{\pi } {2} \right] \).
The function \(f\)
is neither increasing nor decreasing.
The function \(f\)
is decreasing.
The function \(f\)
is increasing.
The function \(f\) is increasing and decreasing.