Let $A = B = \{ 1,2,3 \}$ , and Consider the Function

question 12

Essay

Let $A = B = \{ 1,2,3 \}$ , and consider the function $f : A \rightarrow B$ defined as follows: $f ( 1 ) = 3$ , $f ( 2 ) = 1 , f ( 3 ) = 3$ . Is $f$ onto? Why or why not?

---

Definitions:

Time Series Data

Data collected and recorded at regular intervals over a period of time, often used for analyzing trends, cycles, and forecasts.

Real GDP

Gross Domestic Product adjusted for inflation, measuring the value of goods and services produced by a country's economy in real terms over a specific period.

Nominal GDP

The market value of all final goods and services produced within a country in a given period, measured in current prices.

Base Year

A specific year against which economic growth is measured, serving as a standard comparison for other years in index calculations and real values.