The Derivative

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The derivative is one of the most important concepts in calculus, so make sure you understand it inside and out with these free resources from around the web. We have videos explaining derivative notion, instantaneous rate of change, and more.
Very extensive help sheet that contains everything from simple derivative/integration formulas, to quick explanations of advanced derivation and integration techniques.

Several example problems and tutorials dealing with differential calculus

The perfect study site for high school, college students and adult learners. Get help to do your homework, refresh your memory, prepare for a test, ....

differentiation formulas

In this video, Salman Khan of Khan Academy explains derivatives. Part 1 of 9.

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Definition of this method, f '(x) ~ (f(x+d) - f(x-d)) / (2d), for approximating derivatives and its advantages over the previous method.

Discussion of the potential problems with the first method for approximating derivatives.

Graphs of the types of discontinuities, including cusps, jump discontinuity, removable discontinuity, infinite discontinuity, and essential discontinuity.

Definition, including differentials and an applet for graphing a function and its derivative

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