Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
Find all points on the curve
y
=
x
3
−
6
x
2
+
9
x
+
7
y=x^{3}-6x^{2}+9x+7
y
=
x
3
−
6
x
2
+
9
x
+
7
at which the tangent is horizontal.
Browse the problem library