Approximating /transforming /absolute error

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Opariuc Andrei
Opariuc Andrei 2020-10-27
评论： Alan Stevens 2020-10-28
input data
r=3;h=8;Dv=0.1;
Dr=(Dv/3)*(1/(1/3*pi*h*2*r))
the result is 6.6315e-04 , how do i transform /aproximate/etc the result on the left to 0.00066 ? I ran a conversion to decimal using Symbolab (website) and the exact result of the conversion is 0.00066315 .

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Alan Stevens
Alan Stevens 2020-10-27
For display purposes you can use fprintf:
>> r=3;h=8;Dv=0.1;
Dr=(Dv/3)*(1/(1/3*pi*h*2*r));
fprintf('%0.2g \n',Dr)
0.00066
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Opariuc Andrei
Opariuc Andrei 2020-10-28
Oh master , please accept my humble thank you :)
Alan Stevens
Alan Stevens 2020-10-28
You're welcome. Note that I've suggested a very simplistic approach. A more advanced approach might involve a Monte-Carlo simulation and/or allow different tolerances on each of A, B etc.

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