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Wikipedia:Reference desk/Archives/Mathematics/October 2008

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October 1

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 1

  1. Recurrence
  2. algebra

October 2

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 2

  1. Question related to .999...
  2. Logic problem: Working out Wendy's birthdate
  3. Continuity on the complex plane
  4. Expressions
  5. Find an analytic function f(z) such that f(f(z)) = exp(z)

October 3

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 3

  1. Imaginary Numbers
  2. Margin of error question...?
  3. Please help in German–English maths translation
  4. Grading on a Curve: Percents, Percentiles, and Z-Scores

October 4

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 4

  1. request for solution for maths question
  2. maths question
  3. The logics of significance and insignificance
  4. Definite matrix
  5. "Undiscovered integer"?

October 5

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 5

  1. Complexity of solving a sparse linear system

October 6

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 6

  1. Solution manual
  2. Julia set in nature

October 7

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 7

  1. Name
  2. Compass and Midpoint
  3. Infinite increase
  4. Correlation between shapes
  5. side, edge of a circle
  6. The 1-D Heat Equation
  7. Simple statistics question

October 8

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 8

  1. Minimizing first-time comparisons
  2. Possible to solve this calculus problem?

October 9

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 9

  1. Order of subgroups
  2. Polarities
  3. Combinations
  4. simultaneous equations
  5. Limit of an α-sequence

October 10

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 10

  1. The real deal with fitting lines to observed data points
  2. Use of atan2 in a maths article

October 11

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 11

  1. 4th grade physics question (fluids, force, pressure)

October 12

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 12

  1. Multiplying matrices of functions/arrays (in MATLAB)
  2. Proving inequality for derivates (defined in Royden's Real Analysis)
  3. Differentiation problem
  4. Linear algebra puzzler
  5. cost of transporting goods

October 13

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 13

  1. Volume ratio
  2. 1/x integral
  3. help in editing gelfand pairs
  4. Calculating a growth (or interest) rate
  5. Dumb question about infinity
  6. Solving equations
  7. cardinality of unions

October 14

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 14

  1. Additional question about infinites, related to the one posted above.
  2. Expression for IDFT
  3. I need help isolating a variable

October 15

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 15

  1. The "bound"/"clamp"/? function
  2. conjugate harmonic function
  3. Simple problem re Future Value

October 16

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 16

  1. 4
  2. Vector problem in MATLAB

October 17

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 17

  1. Logic problem
  2. Tangents to circles
  3. Complex Function
  4. Diophantine Equation

October 18

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 18

  1. [[Wikipedia:Reference_desk/Archives/Mathematics/2008 October 18#Equations of the form ]]
  2. Integration question...
  3. Fourier transform in f instead of w (angular frequency) in Maple

October 19

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 19

  1. The number of arithmetic progressions possible
  2. [[Wikipedia:Reference_desk/Archives/Mathematics/2008 October 19#|]]
  3. Countable metacompactness of the Sorgenfrey plane.

October 20

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 20

  1. On hyperchains
  2. Reflection
  3. Help
  4. the mathematician's personality.

October 21

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 21

  1. dinner party problem
  2. Points on a plane
  3. Significant figures

October 22

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 22

  1. Perfect square
  2. Simultaneous linear equations
  3. Is it true...
  4. Parabola

October 23

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 23

  1. Question about Collocation method
  2. Math(s)?
  3. Stat(s)?
  4. Bounds on the Real Zeros of a Polynomial
  5. efficient algorithm for converting an integer to a sum of four squares

October 24

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 24

  1. Matroid morphism
  2. Help with problem

October 25

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 25

  1. Roulette Odds
  2. Solving diophantine equations
  3. NNOs

October 26

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 26

  1. Dual Graph Problem...

October 27

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 27

  1. Accepted convention for combining radians and degrees
  2. Is this even possible?

October 28

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 28

  1. Combinatorics problems
  2. Induction of derivative of exponential functions
  3. Combinatorial problem
  4. Quick question about solving for factors

October 29

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 29

  1. arc length
  2. Asympotitic number of arithmetic progressions

October 30

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 30

  1. Singularity functions in Ti-89/84+
  2. Complementary integer sequences
  3. The function of sines

October 31

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Wikipedia:Reference_desk/Archives/Mathematics/2008 October 31

  1. Mazes
  2. My Theory that a fraction is a sum
  3. group as a fundamental group
  4. Functions with finite number of local extrema