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("tanh x")/("sech x -1 ") + ("tanh x")/(...

`("tanh x")/("sech x -1 ") + ("tanh x")/(sech x + 1")` =

A

`"-2 cosech x"`

B

`"sinh x + cosh x"`

C

`"sech x "`

D

`"tanh x"`

Text Solution

Verified by Experts

The correct Answer is:
A
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