Chapter 3

Equations of Tangent lines Horizontal and Vertical Tangent Lines Interpreting graphs of f(x) & f'(x) 
For Mr Kelley's great tutorials on these topics go to: http://www.calculushelp.com/tutorials/
proof of the derivative of ln x and e to the x
https://www.khanacademy.org/math/differentialcalculus/advanceddiffdc/proofsforderivativesofexandlnxdc/v/proofddxlnx1x
for chain rule usubstitution worked out
proof of the derivative of ln x and e to the x
https://www.khanacademy.org/math/differentialcalculus/advanceddiffdc/proofsforderivativesofexandlnxdc/v/proofddxlnx1x
for chain rule usubstitution worked out