Sketch a Typical Level Surface for the Function $$f ( x , y , z ) = \cos \left( x ^ { 2 } + y ^ { 2 } + z ^ { 2 } \right)$$

question 118

Multiple Choice

Sketch a typical level surface for the function.
- $$f ( x , y , z ) = \cos \left( x ^ { 2 } + y ^ { 2 } + z ^ { 2 } \right)$$

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