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Mathematics
Problem
For the curve
x
=
t
3
−
3
t
,
y
=
t
2
−
2
x=t^{3}-3t,\;y=t^{2}-2
x
=
t
3
−
3
t
,
y
=
t
2
−
2
on
−
2
≤
t
≤
2
-2\le t\le2
−
2
≤
t
≤
2
, how many distinct points have either a horizontal or a vertical tangent? a)
4
4
4
b)
3
3
3
c)
2
2
2
d)
1
1
1
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