Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
The function
g
(
x
)
=
x
2
−
4
x
+
5
g(x)=x^{2}-4x+5
g
(
x
)
=
x
2
−
4
x
+
5
is considered only for
x
≥
2
x\ge 2
x
≥
2
. Evaluate
g
−
1
(
9
)
g^{-1}(9)
g
−
1
(
9
)
. a)
2
−
2
2
2-2\sqrt{2}
2
−
2
2
b)
2
+
2
2
2+2\sqrt{2}
2
+
2
2
c)
5
5
5
d)
4
+
2
2
4+2\sqrt{2}
4
+
2
2
Browse the problem library