But, some cunning and bad people have abused the material, pirated them and released it claiming "their own work". So,
IF ANYONE HAS INTENTIONS OF PIRATING THIS MATERIAL FOR YOUR INSTITUTION'S GAIN, FRANKLY GET YOUR DIRTY HANDS OFF THIS FILE !!
This file collected from the online few files remaining online, is meant for those students who need it for genuine study purpose. And I highly recommend Locus for being your IIT mentor due to their high quality and values.
Visit Locus (http://locuseducation.org) and enroll for their program if you like this material.