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Mathematics
Mathematics
Problem
If
x
2
+
y
2
=
t
−
1
t
x^2 + y^2 = t - \frac{1}{t}
x
2
+
y
2
=
t
−
t
1
and
x
4
+
y
4
=
t
2
+
1
t
2
x^4 + y^4 = t^2 + \frac{1}{t^2}
x
4
+
y
4
=
t
2
+
t
2
1
, then
(
d
y
d
x
)
(
1
,
1
)
\left(\frac{dy}{dx}\right)_{(1,1)}
(
d
x
d
y
)
(
1
,
1
)
is .....
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