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Mathematics
Problem
The curve
x
2
/
3
+
y
2
/
3
=
4
2
/
3
x^{2/3}+y^{2/3}=4^{2/3}
x
2/3
+
y
2/3
=
4
2/3
is an astroid. Determine all points on the curve where
d
y
d
x
\dfrac{dy}{dx}
d
x
d
y
is undefined.
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