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Archimedes

In the Walt Disney film The Sword in the Stone (1963), the wizard Merlin is accompanied by an anthropomorphic owl named "Archimedes." http://www.imdb.com/title/tt0057546/quotes

The term "Eureka" - commonly invoked as an oath or exclamation, especially in the scientific community, to mark a new revelation or discovery, is widely attributed to Archimedes. According to the Roman historian Vitruvius, Archimedes was in the midst of taking a bath when he discovered the relationship of buoyancy to density; he became so excited that he ran home, naked, shrieking Eureka ("I've found it!").http://www.scientificamerican.com/article.cfm?id=fact-or-fiction-archimede

updated 2010-12-31 20:42:25

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TI Graphing Calculators

• TI-Nspire
• TI-73 Explorer
• TI-83 Plus
• TI-84 Plus
• TI-86
• TI-89 Titanium
• Voyage 200

updated 2010-07-18 00:30:32

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How to Find the Slope

If you need to find the slope of a line that exists between two points, you use the formula: m = y₂ - y₁/x₂ - x₁ where (x₁,y₁) and (x₂,y₂) are points on the same line.

Example: Points (2,2) and (6,7)

m = (7 - 2)/(6-2)

m = 5/4

updated 2010-07-17 08:43:01

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Integration (Calculus)

Many integrals have pre-solved formulas. http://www.integral-table.com/ Gauss, a German Mathematician, made the first table of integrals. http://integrals.wolfram.com/about/history/A number of the most useful integrals are: http://www.math.com/tables/integrals/tableof.htm

• (integral)x^n dx = x(n+1) / (n+1) + C
• (integral)1/x dx = ln|x| + C
• (integral)e^x dx = ex + C
• (integral)b^x dx = b^x / ln(b) + C
• (integral)ln(x) dx = x ln(x) - x + C
• (integral)sinx dx = -cos x + C
• (integral)cosx dx = sin x + C
• (integral)tanx dx = -ln|cos x| + C

Since integration can be tedious and integrals can be complex, many people use computer programs to integrate, such as the Wolfram Integrator online. http://integrals.wolfram.com/about/faq/#11

updated 2010-10-22 19:09:14

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Rational Number

The notion of number has intrigued mathematicians since ancient times. While fractions were understood by the Greeks and used with a geometrical meaning, the nature of irrational numbers such as the square root of 2 became clearer during the Renaissance and has been formalized since the eighteenth century.http://www.geom.uiuc.edu/~demo5337/Group3/hist.html

updated 2010-07-17 19:49:32

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Texas Instruments Coupons

The coupon policies you will need to follow to redeem your coupons for Texas Instruments items will vary depending on the store you are purchasing at and the coupon. Some offers are only valid on particular items or can only be used on purchases exceeding a certain amount, so you will need to read the coupon instructions carefully before redeeming it.http://www.savings.com/b-TEXAS-INSTRUMENTS-coupons.html Be sure to check for an expiration date before attempting to use any coupon or coupon code as well.

updated 2010-07-17 23:46:30

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