Transcription of MATLAB Basics - Calvin College
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MATLAB Basics - Calvin College
MATLAB BasicsMATLAB numbers and numeric formatsAllnumerical variables are stored in MATLAB indouble precision floating-pointform.(In fact it ispossibleto force some variables to be of other types but not easily and this abilityis not needed here.)Floating-pointrepresentation of numbers is essentially equivalent to the scientific notation of your calculator. Specifically a (real) numberxis stored inbinaryfloating point form asx f 2 Ewherefis called themantissaandEtheexponent. The exponent is an integer (positive ornegative) and the mantissa lies in the range 1 f 2. This representation is entirelyinternalto the machine and its details are not important here. (They are important when analyzingcarefully the performance of numerical algorithms.)Similar formats using the conventionaldecimalsystem are available for MATLAB inputand output. These formats can be set in theFile Preferences menu in the MATLAB command window.
MATLAB Basics MATLAB numbers and numeric formats All numerical variables are stored in MATLAB in double precision floating-point form. (In fact it is possible to force some variables to be of other types but not easily and this ability is not needed here.) Floating-point representation of numbers is essentially equivalent to the “scientific notation” of your calculator.
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