Application of derivatives, from my experience, is one of those chapters which are falsely ruled out as "too difficult" by students these days. It has become kind of cliché. But this study deals this immensely useful topic deeply and elegantly.
Before downloading, I urge everyone to read what follows. Locus made themselves different by giving away their HIGH-QUALITY study material for free for everyone's benefit. A noble effort.
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.