Econ 300 Review Sheet for First Midterm In accordance with the main objectives for this course as listed on the syllabus the exam will pose questions on terminology and notation why economists use math calculations typically applied by economists to solve economic problems We recommend that you prepare for the exam by completing two different types of tasks described below as A and B A Work through the concepts listed below and make sure for each term you can recognize and apply the definition in words in some cases what we have called intuitive meaning any corresponding mathematical expression formula graph or formal definition at least one example of an economic application As you do this you should create a cheat sheet on a standard sheet of paper two sided You can put whatever you like on this sheet of paper in whatever form you like and can use it during the exam B You should review problem sets 1 and 2 and all of the exercises presented in discussion section and class as many of the calculation type problems on the exam are drawn from these exercises Other exercises presented in the book are good sources of review and at least one or two exam questions will reflect the other exercises found in the book You should take the prior exam which is on the course web site After you complete the exam which should take you less than 50 minutes you should check your answers with the answers posted on the course web site Problems you did not get correct are a good indicator of where you need to do additional work List of Key Concepts and Terminology real numbers integers intervals sets univariate functions domain of a function range of a function validity of a function independent variables dependent variables endogenous variables exogenous variables parameters intercept slope formula for a straight line formula for average rate of change secant line parabola increasing or decreasing functions strictly increasing or strictly decreasing functions monotonic functions inverse of a function multivariate functions Cobb Douglas function isoquants and indifference curves extreme values maxima and minima global and local limits continuity concavity strict concavity convexity strict convexity exponential functions compound interest rates present value frequency of compounding continuous compounding logarithmic functions natural logarithmic functions growth rates systems of equations general equilibrium models partial equilibrium models differential calculus comparative statics difference quotient derivative instantaneous rate of change tangent line differentiability and the question of the existence of a derivative differential marginal cost marginal utility 2
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