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Find derivative of tanz by first …

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Find derivative of tanz by first principal

Posted by Shipra Yadav 6 years, 10 months ago

CBSE > Class 11 > Mathematics

1 answers

Chirag Sharma 6 years, 10 months ago

As lim= tan(x+h)-tan(x)/h h->0 = multiply and divide by1+tanxtan(x+h) =tan(x+h)-tanx. 1+tan(x+h)tanx --------------------- ---------------------- . 1+tanxtan(x+h). h = tan(x+h-x). 1+tan(x+h)tanx -------------------------------------------- h = tanh. 1+ tan(x+h)tanx ------------------------------------- h As tanh/h=1 = 1+tan(x+h)tanx Put h=O =1+tan^2x= sec^2x

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