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Mathematics
Mathematics
Problem
Solve the equation
5
tanh
x
+
7
=
5
sech
x
5 \tanh x + 7 = 5 \operatorname{sech} x
5
tanh
x
+
7
=
5
sech
x
Give each answer in the form
ln
k
\ln k
ln
k
where
k
k
k
is a rational number.
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