Thursday
Mostly summarized from Gregory Mankiw’s Principles of Economics, 5th Ed. PART 9 The Real Economy in the Long Run Chapter 26 of 36 Saving, Investment, and the Financial System Section 12 of 25 … Abbreviations used in this section: Y = GDP = gross domestic product C = consumption I = investment G = government purchases NX = net exports S = saving T = taxes … Gross domestic product, GDP is both · total income from sales of an economy’s output (production) of goods (and services) · total expenditure (consumption) on the economy's output of goods GDP (Y) consists of four components of expenditure · consumption, C · investment, I · government purchases, G · net exports, NX I includes investments by both US and foreign based companies. Y equals the sum of the four components C, I, G, NX so, Y = C + I + G + NX This equation is an identity and must always hold because · every dollar of expenditure contained on the left side Y · is contained in one of the four components on the righ...