Fermi
·
Concept Library
·
Courses
·
Books
·
Problems
·
Simulations
·
Math Wiki
·
High School
Fermi
›
Problems
Mathematics
Mathematics
Problem
For the curve
x
=
t
3
−
3
t
,
y
=
3
t
2
−
9
x=t^{3}-3t,\;y=3t^{2}-9
x
=
t
3
−
3
t
,
y
=
3
t
2
−
9
, the tangent is horizontal for which value(s) of
t
t
t
? a)
t
=
±
1
t=\pm 1
t
=
±
1
b)
t
=
±
3
t=\pm\sqrt{3}
t
=
±
3
c)
t
=
0
t=0
t
=
0
d)
t
=
1
+
2
t=1+\sqrt{2}
t
=
1
+
2
Browse the problem library