How to double integral in MATLAB

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kun zhou
kun zhou 2016-10-7
评论： Walter Roberson 2016-10-7
I want double integrate the following
a = 0.3555;
b = 0.3985;
n = 2.343;
f = @(x,y)(1-abs(x/(a*(1-abs(y/b).^n).^(1/n))).^1.745);
integral2(f,-0.3555,0.3985,-0.3555,0.3985)
but it did not work, anybody can help me on this? thanks
  2 个评论
Torsten
Torsten 2016-10-7
编辑：Walter Roberson 2016-10-7
Use
f = @(x,y)(1-abs(x./(a*(1-abs(y/b).^n).^(1/n))).^1.745);
If this does not work either, please include the complete error message.
Best wishes
Torsten.
Walter Roberson
Walter Roberson 2016-10-7
The denominator of that is 0 at y = +/- b, which is going to lead to difficulties in integrating. The integral would perhaps be well-defined theoretically if you could well-define what it meant to raise a value to a floating point number.

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回答（1 个）

Pritesh Shah
Pritesh Shah 2016-10-7
Try dblquad function

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