Question

The function f is defined for x > 1 by
f(x) = 1
x
ln ✓1
x
◆
+
✓
1 1
x
◆
ln ✓
1 1
x
◆
.
Show that the derivative of f is
f0
(x) = ln(x 1)
x2 .
Find any critical (or stationary) points of f and determine
their nature

Answer 1

Answer:

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