9000070403

SubArea: 
Function Behavior
Level: 
A
Project ID: 
9000070403
Accepted: 
1
Clonable: 
0
Easy: 
1
Given function \(f(x) = -x^{2} + 2x + 3\), find the intervals where \(f\) is an increasing function.
\(\left (-\infty ,1\right )\)
\(\left (-\infty ,2\right )\)
\(\left (-\infty ,3\right )\)
\(\left (-\infty ,6\right )\)