Answer:

Step-by-step explanation:
We need to find the directional derivative of the function at the given point in the direction of the vector v.
,point (0, 0, 0) and 
By Theorem: If f is a differentiable function of x , y and z , then f has a directional derivative for any unit vector
and

where 
since, 
then 


The partial derivatives are


Then the directional derivative is

so, directional derivative at point (0,0,0)




4.40÷20=0.22
$0.22per pretzel rod
Any number power zero = 1
Answer:
I think its 22/25 , 0.8888, and then 8/9
Step-by-step explanation:
first convert them to decimals
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