Answers

2014-06-12T16:40:31+05:30
Integration of tan x is -log(cosx)

and integration of 1+cosx*cosx is 3x/2 +sin2x/4
above answer is explained below
we can write 1+cosx*cosx= 1+(1+cos2x)/2
                                        =  3/2+cos2x/2
integrating above equation we get
3x/2 +sin2x/4
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