Proof Derivative of lnx 1x by First Principles

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In this video, we prove a fascinating result that d/dx[ ln(x) ] = 1/x by the definition of the derivative, First Principles, and by the definition of the number e. • #calculus #derivatives #logarithm • Thanks for watching. Please give me a thumbs up if you have found this video helpful. • • Please ask me a maths question by commenting below and I will try to help you in future videos. • • I would really appreciate any small donation which will help me to help more math students of the world. Please donate here: https://paypal.me/MasterWu • • Follow me on Twitter! twitter.com/MasterWuMath

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