Wikipedia:Reference desk/Archives/Mathematics/April 2007

= April 1 = Reference_desk/Archives/Mathematics/2007 April 1


 * 1) the number of cows in great britain²
 * 2) Fraction exponents
 * 3) toyota symbol
 * 4) Stuck on proving an inequality
 * 5) Counting, continued
 * 6) Approximating curves
 * 7) Numbers
 * 8) Binomial expansion for complex powers

= April 2 = Reference_desk/Archives/Mathematics/2007 April 2


 * 1) is a sum of f(eigenvalue) meaningful?
 * 2) Simple groups

= April 3 = Reference_desk/Archives/Mathematics/2007 April 3


 * 1) time for thrown baseball to reach height s
 * 2) how to generate prime numbers?
 * 3) why cannot we find ln(-1)?
 * 4) Geography
 * 5) ox proportional hazards model

= April 4 = Reference_desk/Archives/Mathematics/2007 April 4


 * 1) Foot and Penis Size
 * 2) ifferentation
 * 3) largest prime number
 * 4) Angle problem

= April 5 = Reference_desk/Archives/Mathematics/2007 April 5


 * 1) quare root of pi
 * 2) Triangle integrals?
 * 3) how to undestand this?
 * 4) Initial Value Problems convergence etc
 * 5) Famous function?
 * 6) Volume of sphere
 * 7) Proof that Ke^x for contants K are the only functions that are their own derivative
 * 8) Which Statistical Test?

= April 6 = Reference_desk/Archives/Mathematics/2007 April 6


 * 1) Sweeping the floor
 * 2) Numbers not definable

= April 7 = Reference_desk/Archives/Mathematics/2007 April 7


 * 1) oor Little Suzy
 * 2) ew exciting developments ?

= April 8 = Reference_desk/Archives/Mathematics/2007 April 8


 * 1) Advantages!
 * 2) ig pi notation
 * 3) Carpet cleaning
 * 4) Factorial Problem
 * 5) significant or nonsignificant

= April 9 = Reference_desk/Archives/Mathematics/2007 April 9


 * 1) y = x^2
 * 2) Is there are a statistical method like this?

= April 10 = Reference_desk/Archives/Mathematics/2007 April 10


 * 1) Operations on PowerSeries
 * 2) Logrithm? Solve for x in this?

= April 11 = Reference_desk/Archives/Mathematics/2007 April 11


 * 1) Name for the set of all solutions
 * 2) Volume
 * 3) what is the fastest way to test prime aprime number?
 * 4) Mathematical Transforms
 * 5) Existence of a radical of a Lie algebra
 * 6) Triangulation

= April 12 = Reference_desk/Archives/Mathematics/2007 April 12


 * 1) maginary Interest Rate
 * 2) Unfamiliar Curve
 * 3) Statistical Significance in an Experiment with 3 Possible Results
 * 4) Probability?
 * 5) Whahaha? (horses and goats)

= April 13 = Reference_desk/Archives/Mathematics/2007 April 13


 * 1) .9 repeating = 1???
 * 2) Lottery number 1 to 6
 * 3) Predictor -corrector stuffq

= April 14 = Reference_desk/Archives/Mathematics/2007 April 14


 * 1) ynthetic division
 * 2) Logical equation reduction
 * 3) Linear equation solvers
 * 4) average distance of a cube from its center

= April 15 = Reference_desk/Archives/Mathematics/2007 April 15


 * 1) Math question
 * 2) Line of Best Fit

= April 16 = Reference_desk/Archives/Mathematics/2007 April 16


 * 1) i in other bases
 * 2) 00% of 200
 * 3) Divergent series
 * 4) E(3)
 * 5) Localisation of a graded ring, how can be it be a graded ring as well?.

= April 17 = Reference_desk/Archives/Mathematics/2007 April 17


 * 1) Best Approximation
 * 2) Americans can't count
 * 3) Rolling Standard Deviation
 * 4) Generalizing Hoelder's inequality

= April 18 = Reference_desk/Archives/Mathematics/2007 April 18


 * 1) A power series
 * 2) statistics:hypothesis testing, Type 1 and type 2 error
 * 3) Why do 1+1=2?
 * 4) Equvalence relation vs. partition
 * 5) Partial knowledge

= April 19 = Reference_desk/Archives/Mathematics/2007 April 19


 * 1) More Hölder inequality fun
 * 2) Significant_figures

= April 20 = Reference_desk/Archives/Mathematics/2007 April 20


 * 1) The integral of cosz / z(z^2 +8) dz?
 * 2) Inter-rater agreement: Are there different alternatives for calculation of the confidence interval for kappa?
 * 3) Freaky triangles - Where did those two squares come from???

= April 21 = Reference_desk/Archives/Mathematics/2007 April 21


 * 1) How many different ways can I express 1,-1,1,-1, ... as a one-variable function?
 * 2) Test question
 * 3) Prime Numbers

= April 22 = Reference_desk/Archives/Mathematics/2007 April 22


 * 1) Math Songs
 * 2) Cubic Functions
 * 3) Polynomial sequence
 * 4) USB symbol
 * 5) Quadratic Equations
 * 6) uploading of math diagrams

= April 23 = Reference_desk/Archives/Mathematics/2007 April 23


 * 1) E(max{d20+x1,d20+x2,...,d20+xn})
 * 2) what is?
 * 3) Connections within a hypercube
 * 4) Dirichelet eta and Riemann Zeta

= April 24 = Reference_desk/Archives/Mathematics/2007 April 24


 * 1) PrefixSpan Algorithm
 * 2) orrelated random walks
 * 3) on-random number generator

= April 25 = Reference_desk/Archives/Mathematics/2007 April 25


 * 1) Conic Section
 * 2) Inverse of NxN Matrices Mod M (Hill cipher)
 * 3) Help with surds
 * 4) Factors

= April 26 = Reference_desk/Archives/Mathematics/2007 April 26


 * 1) Refunding overpayments from accounts receivable
 * 2) Dimension of orthogonal complements
 * 3) Log functions
 * 4) Solve an equation of 4th order

= April 27 = Reference_desk/Archives/Mathematics/2007 April 27


 * 1) choice function
 * 2) ums of cubes
 * 3) ore average than average
 * 4) Quarternions as applied to computer graphics

= April 28 = Reference_desk/Archives/Mathematics/2007 April 28


 * 1) Iterative method: Cost of moving and cost of evaluation
 * 2) solvable subgroup
 * 3) cyclic group
 * 4) Initial value problems
 * 5) meaning of k in combinations and permutions

= April 29 = Reference_desk/Archives/Mathematics/2007 April 29


 * 1) aths Competition
 * 2) math property
 * 3) More qualifying examination preparation
 * 4) Error in Number Theory book?

= April 30 = Reference_desk/Archives/Mathematics/2007 April 30


 * 1) Analysis exercise bank
 * 2) Difference?
 * 3) 1+1=2 ... why???