Find the gradient field F of the function f.f(x, y, z) = ln
+ z9
A. F = 
i + 
j + 
k
B. F = 
i + 
j + 
k
C. F = 
i + 
j + 
k
D. F = 
i + 
j + 
k
Answer: A
Mathematics
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.
?
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?
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