Review

Key Concepts

base

independent variable

better set

indifferent curves

boundary point

intimum

bounded

integers

cardinality

iniercepl term

Cartesian product

interior numbers

Cobb-Douglas function

interior point

closed interval

intersection

codomain

intervals

compact

irrational numbers

complement

isoquanls

completeness property

level set

composite mapping

linear function

concavity

logarithmic function

convex combination

mapping

convexity

natural logarithm

coordinate system

natural numbers

dependent variable

neighborhood

dimensions

nonnegative numbers

disjoint

one-to-one correspondence

distance

ordered pair

domain

partition

exponent

point sets

exponential function

power function

elements

power se t

empty set

proper subset

Euclidean distance

pure number

function

quasiconcavily

image

quasicorrvexity

image set

rational numbers

implicit function

range

rectangular hyperbola slope coefficient real line subset real numbers supremum real-valued functions union relative difference universal set set Venn diagram singleton worse set slope

Review Questions t. How does a Venn diagram help to illustrate the possible relationships between sets and subsets?

2. What is meant by "the real line"?

3. What is a supremum? What is an infimum?

4. What is a point set? What is a convex set?

5. Distinguish between closedness and boundedness of a point set. fi. Distinguish between concavity and convexity of a function.

7. Distinguish between quasiconcavity and concavity.

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