1003206001
Level:
A
We are given three quadratic functions:
\[ \begin{aligned}
f_1(x)&=-x^2-2, \\
f_2(x)&=-x^2-2x-4, \\
f_3(x)&=x^2+2.
\end{aligned} \]
Which of the given functions are increasing on the interval \( (-2;0) \)?
only \( f_1 \)
only \( f_2 \)
\( f_1 \) and \( f_2 \)
all three given functions
