Differentiate $\frac { e ^ { ( x - 1 ) } } { e ^ { ( x + 1 ) } }$

question 53

Multiple Choice

Differentiate.
- $\frac { e ^ { ( x - 1 ) } } { e ^ { ( x + 1 ) } }$

• A) 0
• B) \(\frac { 2 \mathrm { e } ^ { \mathrm { x } } } { \left( \mathrm { e } ^ { \mathrm { x } } + 1 \right) ^ { 2 } }\)
• C) \(\frac { e ^ { x } - e ^ { x } \left( e ^ { x } - 1 \right) } { \left( e ^ { x } + 1 \right) }\)
• D) 1

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