Find the Derivative of Y $$y = \ln ( \operatorname { sech } ( 4 x + 5 ) )$$

question 43

Multiple Choice

Find the derivative of y.
- $$y = \ln ( \operatorname { sech } ( 4 x + 5 ) )$$

• A) \(\tanh ( 4 x + 5 )\)
• B) \(- \tanh ( 4 x + 5 )\)
• C) \(- 4 \tanh ( 4 x + 5 )\)
• D) \(\frac { 4 } { \operatorname { sech } ( 4 x + 5 ) }\)

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