Find the Domain of the Function $$f ( x ) = \left\{ \begin{array} { l l } 2 x & \text { if } x \neq 0 \\2 & \text { if } x = 0\end{array} \right.$$

question 73

Multiple Choice

Find the domain of the function.
- $$f ( x ) = \left\{ \begin{array} { l l } 2 x & \text { if } x \neq 0 \\2 & \text { if } x = 0\end{array} \right.$$

• A) \(\{ x \mid x \neq 0 \}\)
• B) all real numbers
• C) \(\{ x \mid x \leq 0 \}\)
• D) \(\{ 0 \}\)

---

Definitions:

Marginal Cost

The variation in overall expenses that occurs with the production of an additional unit.

Total-Cost Curve

A graphical representation showing the total cost of producing different quantities of a good or service.

Marginal Product

The additional output that is gained by employing one more unit of a factor of production.

Average-Variable-Cost Curve

A graphical representation showing how the average variable cost of production changes as the quantity of output is altered.