Q4 of 45 Page 1

Evaluate:

Formula: -


(i) Integration by substitution: -


When x = g(t) so that then


.


(ii)


(iii)


Now let t = 1 + log x


using formula(iii)





⇒dx = x dt



Integrating the function



Substitution 1 + log x as t



Using formula(i)




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