3.1 Derivatives - PowerPoint PPT Presentation

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3.1 Derivatives

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  1. Photo by Vickie Kelly, 2003 Greg Kelly, Hanford High School, Richland, Washington 3.1 Derivatives Great Sand Dunes National Monument, Colorado

  2. We write: There are many ways to write the derivative of is called the derivative of at . “The derivative of f with respect to x is …”

  3. “the derivative of f with respect to x” “f prime x” or “y prime” “the derivative of y with respect to x” or “dee why dee ecks” “the derivative of f with respect to x” or “dee eff dee ecks” “the derivative of f of x” “dee dee ecks uv eff uv ecks” or

  4. Note: dx does not mean d times x ! dy does not mean d times y !

  5. does not mean ! does not mean ! Note: (except when it is convenient to think of it as division.) (except when it is convenient to think of it as division.)

  6. does not mean times ! Note: (except when it is convenient to treat it that way.)

  7. In the future, all will become clear.

  8. The derivative is the slope of the original function. The derivative is defined at the end points of a function on a closed interval.

  9. A function is differentiable if it has a derivative everywhere in its domain. It must be continuous and smooth. Functions on closed intervals must have one-sided derivatives defined at the end points. p