Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-5470-145
+91 7353221155
Use Coupon: CART20 and get 20% off on all online Study Material
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
OTP to be sent to Change
I=∫(1/lnx)dx
let lnx =t
or x= et
dx =etdt
I =∫(1/t) etdt
=∫(1/t)[1+t+t2/2! + t3/3! +..........]dt
=∫[1/t +1+t/2! + t2/3! +..........]dt
=lnt + t + t2/2*2! + t3/3* 3! +.........
=ln(lnx) + lnx + (lnx)2/2*2! + (lnx)3/3* 3! +.........
=ln(lnx) + ∑(lnx)r/r*r! where r varies from 1 to infinity
now put the limit
Register Yourself for a FREE Demo Class by Top IITians & Medical Experts Today !