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Solution of a problem in calculus--iit jee question

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Description
A question in calculus asked in IIT-JEE 2008 paper has been solved with beautiful explanation and it points out why some other method is not suitable. Video courtesy: Youtube.com

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krishnaharsha
By: krishnaharsha
262 days 20 hours 24 minutes ago

Excuse me.....I have just completed my 10th and i have a doubt...Instead of doing all that to find whether it has positive value or not with that long method we can just differentiate the function once.. and we get y' is always= positive.Hence its slope is always positive....so we can conclude that we can directly find the area??? I just was having a doubt.. Though there is and inflection point at y=o can we do the method i have said??

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Kajal Sengupta
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