Q101 of 380 Page 627

Mark (√) against the correct answer in each of the following:


Let


Now multiplying and dividing by cos2x, we get,





Let tan x = t


Differentiating both sides, we get,


sec2x dx = dt


Therefore,



Integrating, we get,





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99

Mark (√) against the correct answer in each of the following:


 100

Mark (√) against the correct answer in each of the following:


 1

Evaluate the following integrals:

(i)


(ii)


2

Evaluate the following integrals:

(i)


(ii)