Explore BrainMass

Basic Calculus

Crate Supported Cables

I'm having a hard time understand how to solve these problems. The textbook provides the answers. But I need help understanding the step to get to the answer. Also, some of the images maybe be slightly misfigured. I had a hard time cut and pasting the images. If possible please provide diagrams on how you got the solutions. Than

The Ferris Wheel Activity

A ferris wheel has a diameter of 50 feet and the center is 28 feet off the ground and the eight seats are evenly spaced around the circumference and the ferris wheel rotates counter clockwise once every 60 seconds. a.If the ride lasts 3 minutes, draw a graph that records the distance from the ground every 5 seconds for the le

The impact of mathematics on technology

Hello: I need help with the following: The impact of mathematics on technology. a. Prepare a 1,750 to 2,100-word paper which includes historical background on the mathematicians, their time period(s), and the contributions that affected their society and modern society. Provide specific examples of how the mathematical dev

Factorizing the polynomials...!!!

Need help figuring this out There are 10 problems = 0.25 points each for a total of 2.5 points. Partial credit may be earned. Problem 1-Find the pair of factors with a product of 18 & a sum of -9. x2 - 9x + 18 = 0 Factor Problems 2-10. Problem 2 x2 - 14x + 49 = Problem 3 15y4 - 35y3 + 10y2 = Problem 4 x3

Critical Points and Points of Inflection

Please see the attached file for the fully formatted problems. f(x) = x^4 - 4x^3 + 10 a) Find f'(x) and f"(x). b) Find all critical points and identify any local max/min. c) Determine the intervals where f(x) is increasing or decreasing. d) Find all possible points of inflections. e) Determine the intervals whe

Function characteristics ... (Please see attached file)

For function ...(Please see attached file) a) identify zeroes of function b) what(if any) are vertical and horizontal asymptotes, in equation form c)first derivative: f'(x)= second derivative f"(x)= d) intervals where function is increasing and decreasing

Mathematics - Calculus Sales Problem

Please help with the following problem. Provide a step by step calculation. Sales and Saturation Point : Integration using Separation of Variables - The rate of increase in sales ... (Please see the attached file) Sales: The rate of increase in sales S (in thousands of units) of a product is proportional to the current le

Green's Theorem

A particle starts at the point (-2,0), moves along the x-axis to (2,0), and then along the semicircle y= squareroot(4 - x^2) to the starting point. Use Green's Theorem to find the work done on this particle by the force field F(x,y)= < x, x^3 + 3xy^2 >

Solving equations by factoring

Factor 1. x^2 + 12x +36 - y^6 2.9y^2 + 12y + 4 - x^2 solve each equation n^2 + n = 72 (4x + 9)(x - 4)(x + 1) = 0 m^3 = m^2 + 12m (x + 4)(5x - 1 ) = 0 x^ + 6x - 7 = 0 A stereo system installer needs to run speaker wire along the two diagonals of a rectangular room whose dimensions are 40 feet by 75

Calculus (Help me in attached problems.)

In years gone by, undersea cabales were used to provide communication link between ... A three meter high wall is 4 M. from the base of a building. Find the length of the shortest ladder ... (Help me in attached problems.) Thanks

Minimum Length Problem

A fence 3√3 meters high stands 1 meter away from a wall. What is the shortest ladder that can reach from the fence to the wall? Hint: draw a picture. Let (theta) be the angle the ladder makes with the ground. Part of the ladder goes from the ground to the top of the fence, and the other part goes from the top of the fence to t