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## Exam 1 Study Guide

by: Rachel McCord

209

0

4

# Exam 1 Study Guide M119

Marketplace > Indiana University > Mathematics (M) > M119 > Exam 1 Study Guide
Rachel McCord
IU
GPA 3.8
Brief Survey of Calculus
William Orrick

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This is the study guide covering the topics that will be on Exam 1.
COURSE
Brief Survey of Calculus
PROF.
William Orrick
TYPE
Study Guide
PAGES
4
WORDS
KARMA
50 ?

## Popular in Mathematics (M)

This 4 page Study Guide was uploaded by Rachel McCord on Thursday February 5, 2015. The Study Guide belongs to M119 at Indiana University taught by William Orrick in Spring2015. Since its upload, it has received 209 views. For similar materials see Brief Survey of Calculus in Mathematics (M) at Indiana University.

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Date Created: 02/05/15
M119 A Brief Survey of Calculus Exam 1 Study Guide 1 Uquot 10 11 12 13 14 15 16 17 18 19 20 21 22 Function Notation yxmxb a Y depends on X b Independent variable what can change within the problem in the parentheses c Dependent variable Changes depending on the independent variable Significant digits number of digits counting from the first nonzero digit Function Composition When you replace the independent variable of a function with a different equa on a Rt1t and ArTtr2 so a function composition would be Art T1t2 Domain of a function The set of values that the independent variable can take Range of a function Set of values that the dependent variable can take Interval Notation a ab the set of all values x in interval altxltb b ab the set of all values x in interval altxltb c There are also cases of ab Discrete quantity when the problem involves whole numbers such as population of a country Continuous quantity when the problem can have decimalsfractions such as the radius or area of a circle Vertical Line Test In order to determine if a graph is a function no vertical line should pass through more than one point of the function A function assigns a single value to every number in the domain Constant Rate of Change functions where the rate of change is always the same slopes and rates are related Slope riserun or the change in Y the change in X or y2y1x2x1 Arithmetic sequence A sequence of equally spaced values able to determine from a table if a function is potentially linear X and Y are arithmetic Constant Slope Determine slope of points to determine if a function is linear f slope stays constant then it is linear Speed distance travelled time elapsed Average rate of change the same equation as slope Secant line The straight line representing the distance for a trip made at constant speed Also known as the reference line joins curve at 2 points Increasingdecreasing functions A function is increasing if the graph is rising when looked at from left to right In the same way a function is decreasing if the graph is falling Many functions can be neither or both Concave down The rate of change decreases with time which causes the graph to bend down Slope is decreasing Concave up The rate of change increases with time which causes the graph to bend up Slope is increasing Relative change absolute change initial quantity p1 pO p0 is a fraction or percentage Linear depreciation the decrease in value is the same each year Fixed Cost Constant cost that may be included whether producing or not 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 Variable cost vcq where cthe cost of production and qquantity independent variable based on quantity produced Total cost FV Fcq Revenue Function represents the income from the sale of q goods assuming all goods are sole It depends on price p of the goods Rqpq a Price refers to the selling price while cost refers to the cost to the producer for manufacturing the goods Profit Function the difference between the money taken in by a firm and the money going out RqCq Marginal Quantities a Marginal cost the additional cost entailed in producing one additional unit q1 units b Marginal revenue profit the additional revenue that would be obtained if q1 goods were produced c Marginal cost at production level q is 1q1cq d Marginal quantities are the slopes of the corresponding function Producers A higher selling price which means more producers means a greater supply of goods Consumers A higher selling price means less consumers spending money which results in lower demand for goods Supply Sp is an increasing function and Demand Dp is a decreasing function and represent quantities of goods a Price on vertical axis and quantity on horizontal axis Law of Supply and Demand states that in the longrun prices and quantities will go to the equilibrium Specific Tax a fixed dollar amount per product Sales Tax a fixed percentage of the purchase price Effective tax Even when the tax responsibility if on the consumerproducer both end up paying part of the tax Producers pay what they lose in revenue from having to lower prices and consumers pay the rest Monopoly If a company has no competition it is not subject to the market price so it will maximize its revenue Exponential functions PtPoat will later be written as POaquott the independent variable is in the exponent a PO initial quantity since the initial time t0 called the vertical intercept of Pt b A the base of the exponential function It is the factor of change of the function in each time step Relative Rate of Change r is the fractional or percentage change of the function in each time step For exponential functions r is constant Ra1 Differences between linear and exponential functions a Linear ymxb described by two parameters slopem and the vertical intercept b absolute rate is constant b Exponential PP0aquott described by two parameters base a and vertical intercept PO relative rate is constant 39 40 41 42 43 44 45 46 47 48 49 50 51 Geometric sequence A sequence of numbers in which the ratio between successive numbers stays the same Properties of Exponents a XquotaXquotbXquotab XquotaXquotbXquotab Xquota1Xquota assume x doesn t equal 0 XquotO1 XquotaquotbXquotab Xquot1nnsquarerootX XYquotaXquotaYquota xyquotaXquotayquota assume x doesn t equal 0 Interest and compounding various investments savingsmoney market accountsbonds etc are examples of exponential growth as long as the interest earned is kept in the account rather than withdrawn Nominal rate rate r Annual percentage rate APR annual rate Effective annual yield how much you actually earn In general with an annual rate r n times yearly compounding interest rn is paid n times Add interest rate to principle yielding factor of increase of 1rn Compounding base The base of exponential function describing compound interest a1rnquotn Compound interest formula If an initial investment of PO dollars is left to earn interest for t years compounded n times yearly so number of interest payments is nt we get PtP01rnquotnt Continuous Compounding Pt11nquotn a As frequency of compounding gets bigger and bigger the final balance approaches a definite value As n goes towards infinity the result is increased by a decreasing amount b Approaches a known mathematical value e Limiting factor of increase as n approaches infinity it is equotr d If an initial investment of P dollars earns interest at a nominal rate r compounded continuously the balance after t years is PtP0equotrt Summary of Notation n compound interest problems r represents the nominal rate APR Annual factor of increase a the base relates to r differently depending on the compounding schemes Annual Compounding a1r Compounding n timesyear a1rnquotn Continuous Compounding aequotr Effective annual yield a1 In all other contexts r is the relative rate of change and a is the base given by a1r Logarithms The logarithm of a number n taken base a is the exponent of a needed to get n Written as logan Base conversion base conversion factor is always equal to the log of the original base The best choice of a base is e which is known as the natural base gem 999g 099939 a Written as xlnequotx andor aequotlna b The second is called the base conversion formula We use aequotlna to convert from any base a to base e c K is known as the base conversion factor lnorigina base na 52 Connection with continuous compounding k is the nominal rate that produces a factor of change of a under continuous compounding a KltO alt1 means decay b Kgt1 agt1 means growth c Do not mix up relative rate of change r and the continuous rate k i Ra1 ii Klna 53 Properties of Logarithms a LnABnAlnB b LnABlnAlnB c LnAquotnnlnA 54 Half Life and Doubling Time t will often be nfactor of changek

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