Explore BrainMass

Computing Values of Functions

Assets - perfectly negatively correlated

Combining two assets having perfectly negatively correlated returns will result in the creation of a portfolio with an overall risk that A. increases to a level above that of either asset B. decreases to a level below that of either asset C. stabilizes to a level between the asset with the higher risk and the asset

Golf scheduling

I have 8 players and all 8 play on friday only (making two foursomes). We will be playing for a total of 18 weeks. How should they be set up for each different friday so that at the end of 18 weeks they will have played in a foursome with every other player an equal number of times? ( or as close to equal as possible)

Quantitative Method

I need help on this question- A quantitative method may be sensitive to changes in the parameters involved in comparing alternatives. A careful analyst conducts a sensitivity analysis to see if the situation's outcome is susceptible to small changes in such parameters (say 5%). Is Decision Analysis susceptible to such a s

inductive reasoning to predict numbers in sequence

1. Use inductive reasoning to predict the next three numbers in the sequence. 3, 7, 12, 18, ... 2. Given the two statements, write a third statement to complete a valid deductive reasoning argument. Argument: All planes fly in the air. The Boeing 737 jet is a plane. By deductive reasoning, one can conclude, ... 3

An Application of Rational Exponents and Rational Functions

Part 1: Find the average weight in pounds of a type of bird of your choice. Use the rational exponent equation L = 2.43 * W^0.3326 to estimate the wingspan L in feet of the bird that weighs W pounds (Rockswold, 2006). Include in your post the type of bird and the average weight and show the calculations necessary to find the app

Initial value problem using Green's function

Consider the nonhomogeneous linear initial value problem x^2y'' - 2xy' + 2y = 30x(delta)(x - 3), y(1) = 1, y'(1) = 0 Note that y(x) = x satisfies the corresponding homogeneous differential equation. Solve the initial problem using a Green's function approach. What happens to y, y' and y'' at x=3?

Finding the Marginal Revenue Function: Waverly Products

Waverly Products has found that its revenue is related to advertising expenditures by the function R (x) = 5000 + 16x - 3x2 ,where R(x) is the revenue in dollars when x hundred dollars are spent on advertising. a) Find the marginal revenue function. b) Find and interpret the marginal revenue when $1000 is spent on adverti

Examine several newspapers and magazines

Examine several newspapers and magazines and describe at least three examples of functions that appear. What is the domain and range of each function? EXAMPLE OF ASSIGNMENT: The amount of money you pay for a gym membership is a function, because you pay a fee each month in addition to the initial fees for joining. In thi

Functions and modles

Think of a mathematical function that represents something from your own life. For example, suppose the number of beers you drink depends on the number of football games you watch. If you drink five beers during every football game, the function would be: Number of Beers (B) = 5 times Number of Football Games (F), or B = 5F

Limit of a Function

(8) Sketch the graph of an example of a function f that satisfies all of the given conditions. lim (x->0) f(x) = 1, lim (x->0+) f(x) = -1, lim (x->2-) f(x) = 0, lim (x->2+) f(x) = 1, f(2) = 1, f(0) is undefined

Functions and money

Please see attached and show work Please show work. Section 4.1 42.Use the definition of inverses to determine whether f and g are inverses. 72a. Future value. Find the future value and interest earned if $56,780 is invested at 5.3% compounded A). quarterly for 23 quarters. 76. Interest rate. Find the

meiosis and fertilization

Year Populations in MIllions 1980 67.38 1981 69.13 1982 70.93 1983 72.77 1984 74.66 1985 76.60 1986 78.59 Consider the formula P=67.38*(1.026)^t. If we let P represent the population of Mexico in year t where t is the number of years from 198

Mean Crash Damages

In a bumper test, three types of autos were deliberately crashed into a barrier at 5 mph, and the resulting damage (in dollars) was estimated. Five test vehicles of each type were crashed, with the results shown below. Are the mean crash damages the same for these three vehicles? Please see the attached file for the fully for

Sum of numbers

The sum of two numbers is greater than or equal to 30 . The second number is 6 more than the first. What are the possible values for the first of the two numbers? In your answer, denote the first number by x .

Ruler function proof

Define Ruler Function g:(0,1)-> R (it is the usual ruler function available online) as g(x) = { 1/q if x = p/q, p and q are relatively prime { 0 if x is irrational. Show (without using Riemann-Lebesgue Theorem) that g is Riemann integrable. The hint says that since L (lower sum) is zero, it remai

Matlab help

Two related questions. First - I need a good way to display error bars on a scatter plot. I have a set of x and y data, that I have attached as a text file along with y+err and y-err data (denoted +/-). The err values vary from point to point, and +err and -err are not necessarily the same. Second - I am using the data to

Functions and equations and measurement

This Discussion Question will concentrate on functions and graphs. Understanding the definitions of words is the essence of mathematics. When we understand the meaning of words, finding a solution is much easier because we know what task the problem is asking us to complete. a. Part 1 b. In your own words, define the wo

Evaluate functions

Evaluate the functions for the values of x given as 1,2,4,8 and 16. describe the differences in the rate at which each function changes with increasing values of x. 1 f(x)=3x+2 2. f(x)x^2+5x+6 3 f(x)=x^3+3x^2x+1 4. f(x)=e^x 5. f(x)=log x

Functions - Inflation

Find the most recent report of the annual inflation rate of a country of your choice as well as the type of currency used in that country. The equation also typed as S=C(1+r/100)^5 to find the inflated cost S, in 5 years, of an item, good or service, where C is the current price of that item in that country's currency and wher

Inverse Functions and Relations

1. What is an inverse function? In order for a function to have an inverse it must be a one-to-one function. Explain in your own words what it means to be a one-to-one function and why this is a necessary requirement for having an inverse. Give a simple example of a function and its inverse. Explain why these functions are in

Two applications of a rational functions

Part 1: An application of a rational function is Young's rule, which approximates the dosage of a drug prescribed for children. a) Using the Library, web resources, and/or other materials, find the equation for Young's rule. State what each variable in the equation represents. Do not type the equation using the Equatio

Periodic Functions : Bounded and Continuous

1. A function f:R-->R is said to be periodic if there is a number p > 0 such that f(x) = f(x+p) for all xER . Show that a continuous periodic function on R is bounded and uniformly continuous.

Population Growth Problems

In a galaxy far, far away (my professor writes his own practice problems), on the planet Xylor, a herd of 100 Tybars was introduced for breeding. After 5 years, the herd had increased to 500. If the rate of herd growth is assumed to be directly proportional to the number of Tybars present on Xylor at any time t: a. How many T

Green's Functions, Parabolic Equations and Heat Equation

I am having great difficulty understanding how you derive Green's functions, particularly how the boundary conditions are incorporated. I've also not studied Fourier series before and it appears that these are also used particularly in developing solutions for parabolic PDEs. My text does not have any specific worked examples

Proof: Bijective, One-to-one and Onto Functions

1. Consider f:A->A a one-to-one function. Prove that f is also onto. 2. Consider f:A->A an onto function. Prove that f is also one-to-one. A is a finite set. Hint: whenever we have a finite set it is often useful to actually enumerate its elements, i.e. A={a1,a2,....,an}

Functions and their graphs

Pick a country of your choice that is experiencing population growth. Using the Library, web resources, and/or other materials to find the most recent population count of the country you have chosen and the population growth rate of that country. Use that growth rate to approximate the population in the year 2008. Show how each

Second-order and Third-order Rational Functions

Task Name: Phase 3 Discussion Board Deliverable Length: 2-4 paragraphs Details: One of the advantages of rational functions is that even rational functions with low-order polynomials can provide excellent fits to complex experimental data. Linear-to-linear rational functions have been used to describe earthquake plates. As a

Second and Third Order Rational Functions

To explore the versatility of rational functions, choose a second-order/third-order (e.g., x2/x3) and a third-order/second-order (e.g., x3/x2) rational function. Provide a graph for the second-order rational function (e.g., x2), choosing x values in the range from -10 through +10. Then, provide at least three variations of th

Solving an Estimation Problem

Short Response: You are mailing 19 packages. It costs between $9 and $12 to mail each package. Estimate the total cost. Explain the method.

Estimate of Writing and Reading

Writing: You want to know whether 5 hours is enough time to read a book for class. To be sure you finish, should your estimate of the number of pages you can read per hour be high or low? Explain the reasoning.