matlab计算四重积分问题,如何比较简单的计算四重积分呢?必有重谢>> x=14*sin(pi/8);>> y=15-14*cos(pi/8);>> syms s t m n;>> int(int(int(int('1./((((x-m).^2+y.^2+n.^2).^0.5).*(((s-m).^2+225+(t-n).^2).^1.5))',s,-0.15,0.15),t,-0.15,0
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![matlab计算四重积分问题,如何比较简单的计算四重积分呢?必有重谢>> x=14*sin(pi/8);>> y=15-14*cos(pi/8);>> syms s t m n;>> int(int(int(int('1./((((x-m).^2+y.^2+n.^2).^0.5).*(((s-m).^2+225+(t-n).^2).^1.5))',s,-0.15,0.15),t,-0.15,0](/uploads/image/z/7061270-14-0.jpg?t=matlab%E8%AE%A1%E7%AE%97%E5%9B%9B%E9%87%8D%E7%A7%AF%E5%88%86%E9%97%AE%E9%A2%98%2C%E5%A6%82%E4%BD%95%E6%AF%94%E8%BE%83%E7%AE%80%E5%8D%95%E7%9A%84%E8%AE%A1%E7%AE%97%E5%9B%9B%E9%87%8D%E7%A7%AF%E5%88%86%E5%91%A2%3F%E5%BF%85%E6%9C%89%E9%87%8D%E8%B0%A2%3E%3E+x%3D14%2Asin%28pi%2F8%29%3B%3E%3E+y%3D15-14%2Acos%28pi%2F8%29%3B%3E%3E+syms+s+t+m+n%3B%3E%3E+int%28int%28int%28int%28%271.%2F%28%28%28%28x-m%29.%5E2%2By.%5E2%2Bn.%5E2%29.%5E0.5%29.%2A%28%28%28s-m%29.%5E2%2B225%2B%28t-n%29.%5E2%29.%5E1.5%29%29%27%2Cs%2C-0.15%2C0.15%29%2Ct%2C-0.15%2C0)
matlab计算四重积分问题,如何比较简单的计算四重积分呢?必有重谢>> x=14*sin(pi/8);>> y=15-14*cos(pi/8);>> syms s t m n;>> int(int(int(int('1./((((x-m).^2+y.^2+n.^2).^0.5).*(((s-m).^2+225+(t-n).^2).^1.5))',s,-0.15,0.15),t,-0.15,0
matlab计算四重积分问题,如何比较简单的计算四重积分呢?必有重谢
>> x=14*sin(pi/8);
>> y=15-14*cos(pi/8);
>> syms s t m n;
>> int(int(int(int('1./((((x-m).^2+y.^2+n.^2).^0.5).*(((s-m).^2+225+(t-n).^2).^1.5))',s,-0.15,0.15),t,-0.15,0.15),n,-7,7),m,-9,9);
Error using ==> sym.sym>sym.sym/scalarsym at 382
Error:'expression' expected [line 1,col 3]
Error in ==> sym.sym>sym.sym/char2sym at 337
Scell = scalarsym(x);
Error in ==> sym.sym>sym.sym/symchar at 182
Scell = char2sym(x);
Error in ==> sym.sym>sym.sym at 120
S = cell2sym(S,symchar(x,a,nargin));
Error in ==> sym.int at 28
f = sym(f);
四重积分怎么求比较简单啊,不需要编程序最好
matlab计算四重积分问题,如何比较简单的计算四重积分呢?必有重谢>> x=14*sin(pi/8);>> y=15-14*cos(pi/8);>> syms s t m n;>> int(int(int(int('1./((((x-m).^2+y.^2+n.^2).^0.5).*(((s-m).^2+225+(t-n).^2).^1.5))',s,-0.15,0.15),t,-0.15,0
>> x=14*sin(pi/8);
y=15-14*cos(pi/8);
syms s t m n;
int(int(int(int(1./((((x-m).^2+y.^2+n.^2).^0.5).*(((s-m).^2+225+(t-n).^2).^1.5)),s,-0.15,0.15),t,-0.15,0.15),n,-7,7),m,-9,9);
Warning: Explicit integral could not be found.