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Mathematics
Problem
For the curve
2
x
3
+
y
3
=
9
2x^3+y^3=9
2
x
3
+
y
3
=
9
, find
d
2
y
d
x
2
\dfrac{d^2y}{dx^2}
d
x
2
d
2
y
at the point
(
1
,
2
)
(1,2)
(
1
,
2
)
. a)
−
1
-1
−
1
b)
1
1
1
c)
−
5
4
-\dfrac{5}{4}
−
4
5
d)
5
4
\dfrac{5}{4}
4
5
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