Symplifying numerical expression in Symbolic Math

Question

Christian 2011-7-10

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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

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Answer 1

Paulo Silva 2011-7-10

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在 MATLAB Online 中打开

try this

double(LongExpression)

or

vpa(LongExpression)

where LongExpression is your expression.

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Answer 2

Kai Gehrs 2011-7-11

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Hi Chris,

if you have the result inside of MuPAD and there are no symbolic variables remaining in the result, then you can just apply the 'float' command to your result to get a decimal number.

If you want to change the number of digits displayed, you can set the variable 'DIGITS' (all capital letters, that's important) to a value that seems appropriate to you and re-execute the 'float' command.

Hope this helps and best regards, -- Kai