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Henan Fang


Actif depuis 2018

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Question


How to calculate the numerical integration that contains singular points？
T(x,y,afa) is a generated integrand, and the codes are as following.When I calculate M=arrayfun(@(D) integral2(@(x,y) T(x, y, D)...

presque 5 ans il y a | 1 réponse | 0

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réponse

Question


How to obtain the numerical integration of a set of different values of prameter which appear in Xmin
(k,x,y) is a generated integrand as the following codes. v is a parameter in TuuV. I want to get a set of value of the integrati...

plus de 5 ans il y a | 1 réponse | 0

1

réponse

Question


How to use integral2 when the integrand is a array?
Tuu(x,y) is a generated integrand as the following codes. d is a parameter in Tuu. I want to get a set of value of the integrati...

environ 6 ans il y a | 1 réponse | 0

1

réponse

Question


Why there is the error that "insufficient number of inputs"?
Tuu(x,y) is a generated integrand as the following codes. When I calculate the integration "integral2(@(x,y) Tuu,0,pi/2,0,pi/4)"...

environ 6 ans il y a | 1 réponse | 0

1

réponse

Question


How to obtain all the solutions of the equation in pure numerical calculation?
dtuu(kz)=det(tuu) is a polynomial of kz generated through the determinant of matrix tuu. Now, I want to get all the solutions of...

environ 6 ans il y a | 1 réponse | 0

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réponse

Question


How to speed up the program?
Tuu(x,y) is a function generated as the following codes. I need to calculate the integration that "integral2(@(X,Y) arrayfun(@(x...

environ 6 ans il y a | 1 réponse | 0

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réponse

Question


Why there is the error that the number of input parameters is insufficient?
Tuu(x,y) is a function generated as the following codes. If I input,e.g., vpa(Tuu(0.2,0.3)), it will give a correct result. Howe...

environ 6 ans il y a | 1 réponse | 0

1

réponse

Question


How to calculate the integration that the integrand should be determined by the values of variables?
Guu is the integration I want to calculate. However, the integrand Tuu must be determined by the values of x and y because the c...

environ 6 ans il y a | 1 réponse | 0

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réponse

Question


Why my generated matrix has a square bracket at every line?
My generated matrix has a square bracket at every line, why? How to solve this problem? Many thanks! The codes are as follows. ...

environ 6 ans il y a | 2 réponses | 0

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réponses

Question


Why the null(tuu1) gives a Empty sym: 1-by-0?
tuu is a generated matrix containing kz. Through solve the equation det(tuu)==0, one can obtain the solutions kz. I select the o...

environ 6 ans il y a | 1 réponse | 0

1

réponse