A) \[\frac{{{e}^{x}}-{{e}^{-x}}}{2}\]
B) \[\frac{{{e}^{x}}+{{e}^{-x}}}{2}\]
C) \[\frac{{{e}^{-x}}-{{e}^{x}}}{2}\]
D) \[\frac{-({{e}^{x}}+{{e}^{-x}})}{2}\]
Correct Answer: B
Solution :
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