MATLAB: Symplifying numerical expression in Symbolic Math

simplyfy numerical resultsymbolic math

Hi,

after calculating in MuPAD, I´ve got some huge numerical results with fractions and exponents in it. How can I symplify this result in order to get a decimalnumber with just a few digits?

Thanks, Chris

Best Answer

try this

double(LongExpression)

vpa(LongExpression)

where LongExpression is your expression.

Related Solutions

MATLAB: How to get precise conversion in matlab

Every time you use a literal number in MATLAB that is not inside a string, MATLAB is going to evaluate the number as double precision before the Symbolic toolbox gets control. You need to quote your numbers. You should also get in the habit of sym()'ing them

vpa('89.999999999999668207879992402105*pi/180')
vpa('1.5707963267948966192313216916398*180/pi')

but better

vpa(sym('89.999999999999668207879992402105*pi/180'))
vpa(sym('1.5707963267948966192313216916398*180/pi'))

MATLAB: How to set an assumption on a symbolic variable in a symbolic expression

Hi,

you can use the assume function for this purpose.

Note the section for multiple assumptions which requires assumeAlso to work properly.

Best regards

Stephan

Best Answer

Related Solutions

MATLAB: How to get precise conversion in matlab

MATLAB: How to set an assumption on a symbolic variable in a symbolic expression

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