Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Find the value of
k
k
k
so that the quadratic function
f
(
x
)
=
x
2
+
2
(
k
−
3
)
x
+
9
f(x)=x^{2}+2(k-3)x+9
f
(
x
)
=
x
2
+
2
(
k
−
3
)
x
+
9
attains its minimum at
x
=
1
x=1
x
=
1
.
Browse the problem library