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Mathematics
Problem
Find the intervals of monotonicity of the function
f
(
x
)
=
{
2
x
+
3
,
x
<
0
x
2
+
1
,
x
≥
0
.
f(x)=\begin{cases}2x+3,& x<0\\ x^{2}+1,& x\ge 0\end{cases}.
f
(
x
)
=
{
2
x
+
3
,
x
2
+
1
,
x
<
0
x
≥
0
.
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