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Mathematics
Mathematics
Problem
The point
P
(
0
,
−
2
)
P(0,-2)
P
(
0
,
−
2
)
lies on the curve defined by
x
=
t
2
−
1
x=t^{2}-1
x
=
t
2
−
1
and
y
=
t
3
−
3
t
y=t^{3}-3t
y
=
t
3
−
3
t
. Which is the equation of the normal line to the curve at
P
P
P
? a)
y
=
−
2
y=-2
y
=
−
2
b)
x
=
−
2
x=-2
x
=
−
2
c)
x
=
0
x=0
x
=
0
d)
y
=
4
9
x
−
2
y=\dfrac{4}{9}x-2
y
=
9
4
x
−
2
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