find derivative of  :-

e root cot x

 by first principle ?  

Dear Student!

We know that, 

Cheers!

  • 4

Hi!

We know that, 

what is done after this i'm not able to understand

 please explain it more clearly

  • -1

i am  not able to understand whatis done after this step ?????

  • 0

please explain more clearly

  • 0
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