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

`I : ("tanh x")/("sech x - 1") + ("tanh x ")/("sech x + 1") + " 2 cosech x = 0"`
`"II :" ("cosh x")/("1 - tanh x") + ("sinh x")/("1 - coth x")="sinh x + cosh x "`

A

only I is true

B

only II is true

C

both I and II are true

D

neither I nor II true

Text Solution

Verified by Experts

The correct Answer is:
C
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