Rewrite the Expression in Terms of Exponentials and Simplify the Results

question 150

Multiple Choice

Rewrite the expression in terms of exponentials and simplify the results.
- $\ln ( \cosh 5 x - \sinh 5 x ) + \ln ( \cosh 8 x + \sinh 8 x )$

• A) 3
• B) \(\ln \left( e ^ { 8 x } - e ^ { - 5 x } \right)\)
• C) \(13 x\)
• D) \(3 x\)