7. Function of multiple variables
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11 Terms
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definition of function with n variables
a rule that assigns every input to a unique output
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where is the domain of a function with n variables
everywhere the inputs exist
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plane
flat surface in 3D
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what does a graph consist of
all points (x, y, f(x,y)) in the domain of f
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surface
3D graph of f
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where does a surface exist
domain of f
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saddle point
peak in one direction and valley in other direction
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paraboloid
surface with a saddle point
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consider the following
okay
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conditions when (x,y) is not in the domain of f
divide by 0
odd root or non-int power of a negative number
log(x) when x <= 0
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how to write domain
Note 
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