Level:
Project ID:
9000025804
Accepted:
1
Clonable:
0
Easy:
0
In the following list identify a true statement on the function
\(f\).
\[
f(x) = (x + 1)(x + 2)(x - 3)
\]
The function \(f\)
is positive on \(I_{1} = (-2,-1)\)
and \(I_{2} = (3,\infty )\).
The function \(f\)
is an increasing function (in its whole domain).
The function is decreasing only on
\(I = (-1,3)\).
The function is decreasing on \(I_{1} = (-\infty ,-2)\)
and \(I_{2} = (3,\infty )\).