Reference Topics Archives - Page 4 of 9 - The Nature of Mathematics

Reference Topics 12-3

May 21, 2024July 17, 2015 by elaine

Here is a comparison of permutations and combinations.
http://www.mathsisfun.com/combinatorics/combinations-permutations.html

… See the whole entry

Reference Topics 12-2

July 17, 2015 by elaine

Combinations:
http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut57_comb.htm

A slightly more advanced discussion of combinations can be found here:
http://www.wtamu.edu/academic/anns/mps/math/mathlab/col_algebra/col_alg_tut57_comb_ans.htm… See the whole entry

Reference Topics 12-1

May 21, 2024July 17, 2015 by elaine

Discusses the building of tree diagrams.
http://www.shodor.org/interactivate/discussions/pd8.html

Permutations:
http://www.cut-the-knot.org/do_you_know/permutation.shtml

… See the whole entry

Reference Topics 11-6

July 16, 2015 by elaine

Click on calculator after you reach this site:
http://www.moneychimp.com/

This site presents a dictionary of real estate and home purchasing terminology:
http://www.bankrate.com/brm/definitions.asp?channelid=18&letter=a… See the whole entry

There are a multitude of sites to help with retirement planning. Here is a samples:
http://www.troweprice.com/retirement
The annuity formula in the book is actually called an ordinary annuity. This is the situation where the payment is made at the end … See the whole entry

Reference Topics 11-4

July 16, 2015 by elaine

A primer of summation notation can be found at this site:
https://www.math.ucdavis.edu/~kouba/CalcTwoDIRECTORY/summationdirectory/Summation.html

Here is a practice site working with arithmetic and geometric series:
http://mathforum.org/sum95/math_and/spreadsheets/examples/series.html… See the whole entry

Reference Topics 11-3

May 21, 2024July 16, 2015 by elaine

Here is the Mensa home page:
http://www.mensa.org/

There is an interesting association between the Fibonacci numbers and the golden section. This relationship is explored at this site:
https://www.mathsisfun.com/numbers/nature-golden-ratio-fibonacci.html

Here is a site which derives Binet’s formula (Problem 58):
http://mathforum.org/library/drmath/view/52677.html… See the whole entry

Reference Topics 11-2

May 21, 2024July 16, 2015 by elaine

These sites will help you review and price a new car:
http://www.edmunds.com/

Kelley Blue Book:
http://www.kbb.com/

… See the whole entry

Reference Topics 11-1

May 21, 2024July 16, 2015 by elaine

There are many sources of sites related to the material of this chapter. Here are a few of the better ones. Compound interest calculator:
http://www.moneychimp.com/calculator/compound_interest_calculator.htm

This calculator uses continuous compounding:
http://www.moneychimp.com/articles/finworks/continuous_compounding.htm

Calculator and graphs for various financial situations:
http://www.moneychimp.com/index.html

U.S. … See the whole entry

Reference Topics 10-3

May 21, 2024July 15, 2015 by elaine

There are many sites on earthquake readiness; one that shows recent quakes is listed here. You may be amazed that there are so many recent large quakes.
http://pubs.usgs.gov/fs/1999/fs151-99/

Earthquake Locator:
http://earthquaketrack.com/

These sites provide interesting decibel tests:
http://www.phys.unsw.edu.au/jw/hearing.html

The World … See the whole entry