You are here:
- Home
- Science
- Mathematics
- Advanced Math
Advanced Math/Questions
| Subject | Date Asked | Expert |
| Calculating Random Numbers | 2/6/2012 | Scott A Wilson |
| Q: I have been wanting to create a computer program that produces random numbers based on various ... A: If the number were desired to be between 1 and 26, don't multiply by 26, just take mod 26 and add 1. ... | ||
| Calculating Random Numbers | 2/5/2012 | Scott A Wilson |
| Q: I have been wanting to create a computer program that produces random numbers based on various ... A: A true place for generating random numbers can be found at http://www.random.org/ To generate a ... | ||
| Pradeep's question - need clarification | 2/4/2012 | Ahmed Salami |
| Q: You answered on 1/17 a question for pradeep that involved z values. I have the same question on my ... A: As i mentioned in the original solution there are different variations of the normal distribution ... | ||
| Sets, elements, subsets | 2/4/2012 | Paul Klarreich |
| Q: *** I'm not asking you to solve this. Can you please explain how to do these types of problems? You ... A: Questioner:Sarah Country:Florida, United States Category:Advanced Math Private:Yes ... | ||
| Maximum-minimum problem | 2/3/2012 | Paul Klarreich |
| Q: a room of area 18m^2 is divided into six cubicles of equal floor area by erecting two wooden ... A: Questioner:Rubelyna room of area 18m^2 is divided into six cubicles of equal floor area by erecting ... | ||
| LP | 1/31/2012 | Scott A Wilson |
| Q: Solve the following L P problem through SIMPLEX method Maximize Z = 5x1 + 6x2 Subject to 2x1 + ... A: I'll attach it in a file. The 1st column is the value of the variables for each equation. The 2nd ... | ||
| LP | 1/31/2012 | Scott A Wilson |
| Q: Solve the following L P problem through SIMPLEX method Maximize Z = 5x1 + 6x2 Subject to 2x1 + ... A: The variable to add first on a straight forward SIMPLEX problem like this is the variable with the ... | ||
| mathematics | 1/26/2012 | Scott A Wilson |
| Q: explain the word depreciation A: Depreciation is a loss of value. A definition is found in ... | ||
| averages | 1/26/2012 | Paul Klarreich |
| Q: I substitute teach a few days a week and have been trying to figure out how to determine the average ... A: I substitute teach a few days a week and have been trying to figure out how to determine the average ... | ||
| Homework help | 1/25/2012 | Scott A Wilson |
| Q: solve sec^2(x)=1 over the interval [-pi/2,5pi/2] can you please go step by step because its been ... A: It is known that sex(x) = 1/cos(x). If sex^2(x) = 1, then sec(x) = 1 or sec(x) = -1. Since cos(x) ... | ||
| Math | 1/24/2012 | Sherry Wallin |
| Q: Suppose that a market research company finds that at a price of p = $23, they would sell x = 39 ... A: There are a lot of different ways to determine the demand equation. The first thing you need to ... | ||
| averages | 1/24/2012 | Paul Klarreich |
| Q: I substitute teach a few days a week and have been trying to figure out how to determine the average ... A: Questioner:David Subject:averagesI substitute teach a few days a week and have been trying to figure ... | ||
| math | 1/24/2012 | Scott A Wilson |
| Q: Find the smallest positive integer whose product after multiplication by 543 ends in 2009 A: Trying to solve 543n mod 10000 = 2009? In a spreadsheet, I put 543 in A1, 3 in B1, =B1+1 in C1, and ... | ||
| math | 1/23/2012 | Scott A Wilson |
| Q: Lynn is walking from town A to town B, and Mark is riding a bike from town B to town A along the ... A: The two equations at the 1st meeting are X + Y = d, where d is the distance between towns. Since 40 ... | ||
| math | 1/23/2012 | Clyde Oliver |
| Q: The last 3 digits of some perfect squares are the same and non-zero. What is the smallest possible ... A: There are a few ways to consider this question. The first is easy, but not very insightful - this ... | ||
| Proving Pythagorus' theorum using trigonometry | 1/23/2012 | Scott A Wilson |
| Q: In my senior year at school, our maths teacher taught us how to prove Pythagorus' theorum using ... A: It is known that sinē(x) + cosē(x) = 1. It is also known that if the sides of a right triangle are ... | ||
| math | 1/23/2012 | Sherry Wallin |
| Q: Observe the sequence 1,1,2,3,5,8,13,.....Starting from the third number, each number is the sum of ... A: Leonard~ Hopefully you recognize this as the Fibonacci Sequence. There is a lot of information out ... | ||
| Differentiation | 1/21/2012 | Sherry Wallin |
| Q: i have 3 questions, and am trying to see if i have some correct, A(i) write the derivative of the ... A: I will show you how to do the first two. You have not shown me what your answers are or how you did ... | ||
| Proving Pythagorus' theorum using trigonometry | 1/20/2012 | Scott A Wilson |
| Q: In my senior year at school, our maths teacher taught us how to prove Pythagorus' theorum using ... A: Ways to prove it are found in http://www.mathsisfun.com/pythagoras.html Open it up and page down to ... | ||
| Trig graphs | 1/20/2012 | Paul Klarreich |
| Q: after exercising for a few minutes, a person has a respiratory cycle for which the velocity of air ... A: Questioner:alexa Country:California, United Statesafter exercising for a few minutes, a person has a ... | ||
| modules of a function | 1/20/2012 | Scott A Wilson |
| Q: what values of x satisfy the equation |3x| = 2x + 5 A: This problem generates two problems to look at. They are 3x = 2x + 5 is x is non-negative and -3x = ... | ||
| Trignometry / Pre Calculas | 1/19/2012 | Scott A Wilson |
| Q: Convert 2.5 radians to degrees. Give the answer to the nearest ten minutes or tenth of a degree. A: It is known that 180° is the same as pi radias. Therefore to convert radians to degrees, multiply ... | ||
| modulus function | 1/18/2012 | Scott A Wilson |
| Q: Solve 1 + |2x-3| = 3x A: This could be changed by subtracting 1 from both sides into |2x-3| = 3x - 1. To solve, we would ... | ||
| Statistics | 1/17/2012 | Ahmed Salami |
| Q: The Australian Bureau of Statistics reports that of persons who usually work full time, the average ... A: We know that z for a value X in a distribution with mean μ and standard deviation σ is z = ... | ||
| Can you please help me with this word problem | 1/15/2012 | Scott A Wilson |
| Q: Given the length and width (in feet and inches) of a rectangular room and the price per square yard ... A: 1. length of the room, width of the room 2. square feet of the room, which can be converted to ... | ||
| Can you please help me with this word problem | 1/15/2012 | Sherry Wallin |
| Q: Given the length and width (in feet and inches) of a rectangular room and the price per square yard ... A: Is this a linear programming problem? I will help you by listing what you will need to do and you ... | ||
| simple equation | 1/15/2012 | Scott A Wilson |
| Q: sir how can we solve these equations? X^2+Y^3=5274 Y^2+X^3=7148 A: In a spreadsheet, use A1 as X and B1 as Y. In cell C1, put =5274-A1^2. In D1, put =7148-A1^3. In E1, ... | ||
| Linear functions. | 1/11/2012 | Paul Klarreich |
| Q: It ask for you to find the function rule from the graph and the graph states that x|0|1|2|3|4| and ... A: Questioner:U. N. Owen Country:Pennsylvania, United States Category:Advanced Math Private:Yes ... | ||
| Trig graphs | 1/9/2012 | Paul Klarreich |
| Q: I've been working in this problem since yesterday and I don't known what to do next. The ferris ... A: Questioner:vicky Country:Texas, United States Category:Advanced Math Private:No ... | ||
| Savings for baby. | 1/8/2012 | Sherry Wallin |
| Q: My wife and I would like to save an Extra $10,000 by November 2012. Currently I am the only that ... A: J Conceivably you could save $16388 by the time November rolls around. I figure there are 21 ... | ||
| Rate Tables | 1/5/2012 | Scott A Wilson |
| Q: An ostrich can run at a rate of 50 miles in 60 minutes. At this rate, how long would it take an ... A: Since it is known that distance = rate * time, which is written as d = rt, we know d = 50 and t = ... | ||
| Algebra coin word problem | 1/4/2012 | Scott A Wilson |
| Q: A parking meter accepts nickels, dimes, and quarters, there are 32 coins inside with a total value ... A: Assuming that Grady has something to do with the parking meter ... If all of the coins were ... | ||
| Absolute value function. | 12/31/2011 | Paul Klarreich |
| Q: Klarreich, I need help with this maths|t+2|+|3t-1|<5 Thank you A: Questioner:Rima Country:New South Wales, Australia Category:Advanced Math Private: No ... | ||
| power laws | 12/30/2011 | David Hemmer |
| Q: If the number of people(N) with wealth (W) is related to the inverse of W raised to a power between ... A: Your first sentence gives an equation like: N= 1/(W^x) where x is between two and three. If that ... | ||
| Linear equations | 12/29/2011 | Paul Klarreich |
| Q: Line 1 has a slope of M, and y intercept of (0,2). Line 2 has a slope of 2 and a y intercept of ... A: Questioner:Flo Country:Connecticut, United States Category:Advanced Math Private:Yes ... | ||
| Please Help me | 12/29/2011 | Sherry Wallin |
| Q: Q1) what is the value of 3333-333+3? Options are : A)1000,B)2000,C)3222,D)3122. Q2)2/5 0f of a ... A: your choices do not have the correct values in them. For example for the first one: 3333-333+3 = ... | ||
| Absolute value function. | 12/27/2011 | Paul Klarreich |
| Q: the function f(x)=/ax-1/ - /bx+2/ is such that f(-1/2)=1 and f(1/3) = -7/3. given that 0 is less ... A: Questioner: kwibisa Country: Luapula, Zambia Category: Advanced Math Private: No Subject: ... | ||
| integration | 12/25/2011 | Paul Klarreich |
| Q: what is the integration of inverse e^2x? and what is the integration of inverse sin 3x? thanks ... A: Questioner: Mella Country: Jawa Timur, Indonesia Category: Advanced Math Private: No Subject: ... | ||
| Matrix square root | 12/24/2011 | Paul Klarreich |
| Q: Sir,in my opinion it is possible that every square matrix can have a square root matrix having the ... A: Questioner: ASWIN Country: Kerala, India Category: Advanced Math Private: Yes <<<<<<<<<<<<<<<<<< ... | ||
| Sequence and divisibility | 12/24/2011 | Ahmed Salami |
| Q: The first term of an arithmetic sequence is 3p+5, where p is a positive integer. The last term is ... A: If the first term of an arithmetic sequence is 3p+5 and its common difference is 2, then the nth ... | ||
Answers by Expert:
Scott A Wilson
Top Expert on this page
Expertise
I can answer any question in general math, arithetic, discret math, algebra, box problems, geometry, filling a tank with water, trigonometry, pre-calculus, linear algebra, complex mathematics, probability, statistics, and most of anything else that relates to math. I can even tell you it takes me over 2,000 steps to go a mile, but is that relevant?
Experience
Experience in the area; I have tutored people in the above areas of mathematics for almost two years in AllExperts.com. I have tutored people here and there in mathematics since before I received a BS degree almost 25 years ago. In just two more years, I received an MS degree as well, but more on that later.
I tutored at OSU in the math center for all six years I was there. Most students offering assistance were juniors, seniors, or graduate students. I was allowed to tutor as a freshman.
I tutored at Mathnasium for well over a year.
I worked at The Boeing Company for over 5 years.
I received an MS degreee in Mathematics from Oregon State Univeristy.
The classes I took were over 100 hours of upper division credits in mathematical courses such as
calculus, statistics, probabilty, linear algrebra, powers, linear regression, matrices, and more.
I graduated with honors in both my BS and MS degrees.
Past/Present Clients: College Students at Oregon State University, various math people since college,
over 7,500 people on the PC from the US and rest the world.
Publications
My master's paper was published in the OSU journal.
The subject of it was Numerical Analysis used in shock waves and rarefaction fans.
It dealt with discontinuities that arose over time.
They were solved using the Leap Frog method.
That method was used and improvements of it were shown.
The improvements were by Enquist-Osher, Godunov, and Lax-Wendroff.
Education/Credentials
Master of Science at OSU with high honors in mathematics.
Bachelor of Science at OSU with high honors in mathematical sciences.
This degree involved mathematics, statistics, and computer science.
I also took sophmore level physics and chemistry while I was attending college.
On the side I took raquetball, but that's still not relevant.
Awards and Honors
I earned high honors in both my BS degree and MS degree from Oregon State.
I was in near the top in most of my classes. In several classes in mathematics, I was first.
In a class of over 100 students, I was one of the first ones to complete the test.
I graduated with well over 50 credits in upper division mathematics.
Past/Present Clients
My clients have been students at OSU, people nearby, friends with math questions,
and several people every day on the PC, and you're probably make one more.
©2012 About.com, a part of The New York Times Company. All rights reserved.