Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Find the domain of the function
f
(
x
)
=
4
−
x
2
−
6
x
+
5
f(x)=\sqrt{4-\sqrt{x^{2}-6x+5}}
f
(
x
)
=
4
−
x
2
−
6
x
+
5
. a)
(
−
∞
,
1
]
∪
[
5
,
∞
)
(-\infty,1] \cup [5,\infty)
(
−
∞
,
1
]
∪
[
5
,
∞
)
b)
[
3
−
5
,
1
]
∪
[
5
,
3
+
5
]
[3-\sqrt5,1] \cup [5,3+\sqrt5]
[
3
−
5
,
1
]
∪
[
5
,
3
+
5
]
c)
[
3
−
2
5
,
1
]
∪
[
5
,
3
+
2
5
]
[3-2\sqrt5,1] \cup [5,3+2\sqrt5]
[
3
−
2
5
,
1
]
∪
[
5
,
3
+
2
5
]
d)
[
3
−
2
5
,
3
+
2
5
]
[3-2\sqrt5,3+2\sqrt5]
[
3
−
2
5
,
3
+
2
5
]
Browse the problem library