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Numerical Integration by Matlab

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Andy Tan
Andy Tan 28 Dec 2020
댓글: Walter Roberson 29 Dec 2020
Please mention about the tolerance of accuracy

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Walter Roberson
Walter Roberson 29 Dec 2020
https://www.mathworks.com/help/matlab/ref/integral.html#btbbkta-1-AbsTol
Andy Tan
Andy Tan 29 Dec 2020
I have tried but I want to set the tolerance of accuracy 10^-7 but the the results shown in the Matlab is 4decimal places,I don't think the AbsTol is effective?
Walter Roberson
Walter Roberson 29 Dec 2020
Give the command
format long g
and then display the result again.
By default, MATLAB only displays 4 decimal places, but the values are stored internally to higher precision.

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답변(1개)

James Tursa
James Tursa 28 Dec 2020
편집: James Tursa 29 Dec 2020
Hint: You might look here:
Knowing that the integral of the Normal density function from -infinity to +infinity is 1 exactly, maybe you can come up with a change of integration variable to get that equation in a form that matches your integral to get the exact answer directly. Starting with a standard Normal density function (mu=0, sigma=1), it is a pretty easy substitution from there to get what you have.

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