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Math 180. 3.2 – The Derivative as a Function. By modifying the definition slightly, we can consider the derivative as a function of : is _____________ at if exists. ______________ is the process of calculating the derivative .
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Math 180 3.2 – The Derivative as a Function
By modifying the definition slightly, we can consider the derivative as a function of : is _____________at if exists. ______________is the process of calculating the derivative.
By modifying the definition slightly, we can consider the derivative as a function of : is _____________at if exists. ______________is the process of calculating the derivative. differentiable
By modifying the definition slightly, we can consider the derivative as a function of : is _____________at if exists. ______________is the process of calculating the derivative. differentiable Differentiation
Ex 2.Using the definition, find the derivative of for . Now find the tangent line to the curve at .
Ex 2.Using the definition, find the derivative of for . Now find the tangent line to the curve at .
Note: There are many ways people write the derivative of : And here’s what it looks like to plug a value into the derivative:
Note: There are many ways people write the derivative of : And here’s what it looks like to plug a value into the derivative:
Graphing Derivatives Remember that the derivative is the slope of the tangent line.
Note that only exists if both of the following limits exist: Left-hand derivative at Right-hand derivative at
Note that only exists if both of the following limits exist: Left-hand derivative at Right-hand derivative at
Note that only exists if both of the following limits exist: Left-hand derivative at Right-hand derivative at
Ex 3.Compute the right-hand and left-hand derivatives as limits to show that is not differentiable at .
Ex 3.Compute the right-hand and left-hand derivatives as limits to show that is not differentiable at .
Ex 3.Compute the right-hand and left-hand derivatives as limits to show that is not differentiable at .
Ex 3.Compute the right-hand and left-hand derivatives as limits to show that is not differentiable at .
So, derivatives won’t exist at the following kinds of places: corner cusp vertical tangent discontinuity
So, derivatives won’t exist at the following kinds of places: corner cusp vertical tangent discontinuity
So, derivatives won’t exist at the following kinds of places: corner cusp vertical tangent discontinuity
So, derivatives won’t exist at the following kinds of places: corner cusp vertical tangent discontinuity
So, derivatives won’t exist at the following kinds of places: corner cusp vertical tangent discontinuity
Theorem: If has a derivative at , then is continuous at . (That is, differentiable functions are continuous. And if a function is not continuous at a point, then it is not differentiable there.)