Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Let
f
(
x
)
=
x
2
+
2
x
+
5
f(x)=x^{2}+2x+5
f
(
x
)
=
x
2
+
2
x
+
5
. What is the smallest interval containing
x
=
1
x=1
x
=
1
on which
f
f
f
becomes invertible? a)
[
−
1
,
∞
)
[-1,\infty)
[
−
1
,
∞
)
b)
[
1
,
∞
)
[1,\infty)
[
1
,
∞
)
c)
(
−
∞
,
1
]
(-\infty,1]
(
−
∞
,
1
]
d)
[
0
,
∞
)
[0,\infty)
[
0
,
∞
)
Browse the problem library