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Find the Domain of the Function f(x)=x2x2+15f ( x ) = \frac { x ^ { 2 } } { x ^ { 2 } + 15 }

question 1

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Find the domain of the function.
- f(x) =x2x2+15f ( x ) = \frac { x ^ { 2 } } { x ^ { 2 } + 15 }


Definitions:

Acetylcholine

A neurotransmitter in the brain and peripheral nervous system important for muscle contraction and signaling between nerve cells.

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A physiological response to perceived threat or danger, preparing the body to fight or flee.

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