Wikipedia:Reference desk/Archives/Mathematics/September 2008

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style="background: #5D7CBA; text-align: center; font-family:Arial; color:#FFFFFF;" | Welcome to the Wikipedia Mathematics Reference Desk Archives
The page you are currently viewing is a monthly archive index. While you can leave answers for any questions shown below, please ask new questions on one of the current reference desk pages.

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= September 1 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 1

1. Distance along sine curve
2. Perfect square trinomial
3. 10 marbles
4. bernoulli trials with unique p

= September 2 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 2

1. exponential increase

= September 3 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 3

1. hilbart space
2. for a proof
3. Complicated Maths Question
4. A bit of a strange question...
5. Peanut shaped

= September 4 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 4

1. Plot request
2. Calculator for student in college

= September 5 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 5

1. How many different song variations are there?
2. Differential equation

= September 6 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 6

1. heights and distance
2. Surds

= September 7 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 7

1. solenoidal and irrotational field
2. Calculus of variations spring problem
3. Help

= September 8 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 8

1. The Hawthorne Effect and "improvements due to monitoring" of performance
2. Differentiation
3. mathematical representation of geography
4. questions about polynomials

= September 9 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 9

1. Acceleration dependent on position
2. About statistics
3. Index numbers
4. statistics

= September 10 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 10

1. Query regarding divisibilty
2. What are the rules of treating differentials?
3. mathematician name for famous subset of whole #'s 1,2,3,5,8,13,21 ?

= September 11 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 11

1. Origin Of The Concept Of Zero?
2. Followup to [http://en.wikipedia.org/wiki/Wikipedia:Reference_desk/Archives/Mathematics/2008_August_1#Statistics an earlier question]

= September 12 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 12

1. how to predict the next number with 4 digits
2. What did they use before graphing calculators?

= September 13 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 13

1. Calculus Question
2. What are the chances

= September 14 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 14

1. Validity of proof
2. Would like a math expert to look over my experimentation with a simple physics equation
3. numerical analysis
4. Is impulse related to work?
5. earliest date of use or description

= September 15 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 15

1. having problems with conversion of measurements
2. Annual Percentage Rate
3. combinatorics question
4. Population and area question
5. Word Problem- how to setting up the equations
6. Combinations
7. ms^-3
8. Gauss and triangular numbers

= September 16 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 16

1. Constructible numbers
2. Baffling Proportions Problem

= September 17 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 17

1. Functions
2. differential equation
3. combinations and permutaions

= September 18 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 18

1. Formula for planet temperature
2. Finding an average flood height overtime
3. Word for the "terms" in a union
4. 0 dimensional object in 4 dimensional world
5. Elliptic Curves Isomorphism
6. Is there any limitation to defining all x in Q as...
7. Algebra

= September 19 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 19

1. probability

= September 20 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 20

1. Planes and Spheres
2. Radius vs. radian
3. Integration
4. functions
5. Algebra

= September 21 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 21

1. Puzzle
2. Elliptic curves with isomorphic group structure that are not isomorphic

= September 22 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 22

1. Dedekind cuts
2. Find the natural domain and correspong range of this function...
3. Rearranging equations
4. Mean of circular quantities

= September 23 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 23

1. Calculating risk for insurance
2. Rows and columns
3. Seeking lightweight modal logic book
4. inverse function
5. Logarithms
6. Limit Question
7. Using only the numbers 1,2,4,8 and do any operation (+*- () ) to them except for powers to make 27 ? YOU MAY ONLY USE EACH NUMBER ONCE!

= September 24 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 24

1. Beta Distribution Selection
2. The 1-D Wave Equation (d'Alembert)
3. Graph theory question-- order of magnitude of possible set-of-visited-points....
4. Integration by substitution
5. re-encrypting an encrypted file

= September 25 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 25

1. MATH RIDDLE THAT I'VE BEEN TRYING TO FIGURE OUT FOREVER
2. Integration in Matlab
3. 8,101,265,822,784

= September 26 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 26

1. Correlation Coefficients
2. square feet

= September 27 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 27

1. Monochromatic triangles in a graph
2. Integration Question

= September 28 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 28

1. How to calculate maximum volume of a box made with a 7x9 inch paper.
2. Using the Fundamental Theorem of Calculus
3. Differentiation of sin(ax - b) with respect to x.

= September 29 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 29

1. Is this true?

= September 30 =

Wikipedia:Reference_desk/Archives/Mathematics/2008 September 30

1. calculating thickness of plated metal