Differentiate each of the following w.r.t. x:
(i)log3 x
(ii) 
(iii) 
(i) Let y = 
Formula : 
Therefore y =
According to chain rule of differentiation
(ii) Let y = 
z = -x
Formula : 
According to chain rule of differentiation
(iii) Let y = 
z = x
Therefore Y = 
Formula : 
According to chain rule of differentiation
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