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Mathematics
Mathematics
Problem
If
(
a
+
b
x
)
e
y
x
=
x
(a+bx)e^{yx} = x
(
a
+
b
x
)
e
y
x
=
x
, show that
x
3
y
′
′
=
(
x
y
′
−
y
)
2
x^3 y'' = (xy' - y)^2
x
3
y
′′
=
(
x
y
′
−
y
)
2
.
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