5.2b - Scientific Notation Floating Point Format 5.2b...

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5.2b Scientific Notation Scientific Notation Floating Point Format a X 10 n where 1 ≤ a < 10 • Calculators or computers sometimes abbreviate “X 10^” as E NEVER write an E on a test or homework answer! Use “* 10^” ( Show you know !) • Computers internally use a X 2 n where 0.1 b a < 1 • Computers have “Double Precision”, and sometimes “Extended Precision” (Excel uses double precision) Terms a X 10 n where 1 ≤ a < 10 a is called the mantissa n is called the exponent • Once upon a time, we used slide rules or log tables to manipulate the mantissas, and just kept track of the exponents manually. Now we use scientific calculators and computers to do the work. Converting • Each movement of the decimal place by one digit changes the exponent by 1. • You can add as many leading or trailing zeros as you need, in order to move the decimal place far enough. • Negative exponents mean that the number
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This note was uploaded on 10/24/2010 for the course MATH MATH099 taught by Professor Jonh during the Spring '06 term at Pierce College.

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5.2b - Scientific Notation Floating Point Format 5.2b...

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