Google Master Search terms

-- Search on specific site
site: websiteNameHere yourTextHere
-- Related word; Synonyms
~yourTextHere
-- Exact words
"yourWordHere"
-- Exclude term
-yourWordHere
-- Between two dates
2008..2010 yourTextHere
-- File type search
filetype:PDF yourTextHere
-- Show results with the word in title
intitle:yourTextHere
-- * Will be replaced with other words common with the searched term
*yourTextHere
yourTextHere*PartTextHere*OtherPartTextHere
-- Search for papers with specific author
author:AutherNameHere
-- Definition
define: yourWordHere
-- Calculator
2*2
(3/2)*100
-- Unit converter
10 KM in Miles
-- research, use: http://www.jstor.org/

Floating-point errors. They cannot precisely represent all real numbers. Here is an example.

"Floating-point numbers cannot precisely represent all real numbers, and that floating-point operations cannot precisely represent true arithmetic operations, leads to many surprising situations. This is related to the finite precision with which computers generally represent numbers." (From Wiki)

Read more about my example here.
http://majedline.blogspot.ca/2012/06/floating-point-errors-they-cannot.html