(adsbygoogle = window.adsbygoogle || []).push({}); The problem statement, all variables and given/known data

D.w.r.t.x ln[ln tanh x]

The attempt at a solution

So, here is what i've done:

Since differentiating ln x is 1/x

The answer is: (1/ln tanh x).(tanh x).sech(^2)x

What do you think? The answer is not the above though.

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# Homework Help: D.w.r.t.x ln[ln tanh x]

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