Evaluate $\lim _ { ( x , y , x ) \rightarrow ( 0,0,0 ) } \frac { x ^ { 2 } + y ^ { 2 } + z ^ { 2 } } { \left( x ^ { 2 } - y ^ { 2 } + z ^ { 2 } \right) }$

question 22

Multiple Choice

Evaluate $\lim _ { ( x , y , x ) \rightarrow ( 0,0,0 ) } \frac { x ^ { 2 } + y ^ { 2 } + z ^ { 2 } } { \left( x ^ { 2 } - y ^ { 2 } + z ^ { 2 } \right) }$

• A) \(e ^ { - 4 }\)
• B) \(e ^ { - 2 }\)
• C)
• \(e ^ { - 1 }\)
• D)1
• E) \(e ^ { 4 }\)
• F) \(e ^ { 2 }\)
• G) \(e\)
• H)Does not exist

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The branch of economics that focuses on factual and cause-and-effect relationships, avoiding value judgments about what ought to be.