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If $x>y>1,$ which of the following must be true?

  1. $\text{ln } x > \text{ln }y$
  2. $e^{x}>e^{y}$
  3. $y^{x}>x^{y}$
  4. $\cos x> \cos y$

 

  1. $(i)$ and $(ii)$
  2. $(i)$ and $(iii)$ 
  3. $(iii)$ and $(iv)$
  4. $(ii)$ and $(iv)$
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