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Christoph Rudolff
26
Transcript
Christoph Rudolff
Born: 1499
Died: 1545
- He was the author of
the first German
textbook on algebra.
- He introduced the
radicalsymbol for
the square root.
- The symbol for the square root was first used in print in 1525 in Christoph Rudolff's Coss, which was also the first to use the signs '+' and '-'
Interesting Fact: Square Root has its own day,
although it is not official. It is celebrated on days
when both the day of the month and the month
are the square root of the last two digits of the year.
~The last Square Root Day was March 3, 2009 (3/3/09)
~The next Square Root Day will be April 4, 2016 (4/4/16)
Demonstration
To find square root in a calculator,
press the square root key which looks
like this:
Choose the number you would like to
find the square root of.
For example:
Lastly, end it with closing the number
with parenthesis.
Click 'equals' & your answer should
be:
Examples:
4 is a square root of 16
because 4^2 = 16
Square Root of 144 is 12
Square Root of 2,500 is 50
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WATCHING! :)
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