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Khan Academy
Khan Academy: Calculus: Proofs of Derivatives of Ln(x) and E^x
Video lesson proving the derivative of the natural logarithm of x function using the limit definition of a derivative and proving the derivative of the exponential function by using the derivative of the natural logarithm of x function....
Khan Academy
Khan Academy: Calculus: Proof: D/dx (Ln X) = 1/x
Video lesson proving the derivative of the natural logarithm of x function using the limit definition of a derivative. Includes link to additional practice at the top of the video. [9:52]
Khan Academy
Khan Academy: Differential Calculus: Quotient Rule and Common Derivatives
Video lesson showing how to adapt a rational function into a function which uses the product rule to find the derivative instead of using the quotient rule. Also includes the derivative of e to the x, the natural log of x, and the basic...