Q8

1. If y = log (tan x), show that
   dy / dx
   = 2 cosec 2x.
   

   Solution

   
2. If f(1) = 4 and f '(1) = 2, find the value of the derivative of log f(e^x) w.r.t.x at x = 0.
   

   Solution

   
3. If f (x) = e^x g(x), g(0) = 2 and g'(0) = 1, then find f '(0).
   

   Solution

   

Solution

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