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13.6 day 1 Directional Derivatives for an animation of this topic visit http://www.math.umn.edu/~rogness/multivar/dirderiv.shtml.

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Presentation on theme: "13.6 day 1 Directional Derivatives for an animation of this topic visit http://www.math.umn.edu/~rogness/multivar/dirderiv.shtml."— Presentation transcript:

1 13.6 day 1 Directional Derivatives for an animation of this topic visit

2 A directional derivative tells the slope of a surface in a given direction

3 Note: tomorrow we will learn a different way to calculate directional derivatives which
will be the way the way that we will normally calculate them. Example 1 Find the directional derivative of the function f(x,y) at (1,2) in the direction of u

4 Example 1 Solution

5 Definition of Directional Derivative

6 Example 2 Find the directional derivative of f(x,y) in the direction of v.

7 Example 2 Solution

8

9

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