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${d \over {dx}}\left( {{{\log x} \over {\sin x}}} \right) = $

• A
  ${{{{\sin x} \over x} - \log x.\cos x} \over {\sin x}}$
• ✓
  ${{{{\sin x} \over x} - \log x.\cos x} \over {{{\sin }^2}x}}$
• C
  ${{\sin x - \log x.\cos x} \over {{{\sin }^2}x}}$
• D
  ${{{{\sin x} \over x} - \log x} \over {{{\sin }^2}x}}$