Q. 314.0( 4 Votes )

Evaluate the foll

Answer :

Assume log(secx + tanx) = t


d(log(secx + tanx)) = dt


(use chain rule to differentiate first differentiate log(secx + tanx) then (secx + tanx)


= dt



secx dx = dt


Put t and dt in given equation we get


Substituting the values oft and dt we get




But t = log(secx + tanx)


.


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