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if f(x) is tan-1(cot x) , then which of the following are incorrect f(x) is not differentiable at x=π,99π.. f(x) periodic with period π f’(x)=-1 f(x) is discontinous at x=π/2,3π/2..

if f(x) is tan-1(cot x) , then which of the following are incorrect
  1. f(x) is not differentiable at x=π,99π..
  2. f(x) periodic with period π
  3. f’(x)=-1
  4. f(x) is discontinous at x=π/2,3π/2..

Grade:12th pass

1 Answers

Arun
25763 Points
2 years ago
Dear student
 
f(x) is always continuous at x = pi/2, 3 pi/2,....
 
 
hence option D is incorrect.
 
Regards
Arun

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