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kobefree

金虫 (小有名气)


[交流] Matlab求助Warning: Rank deficient, rank = 0, tol = 1.#INFe+000.

如下程序,运行后可以出图,但是提示
arning: Rank deficient, rank = 0,  tol =   1.#INFe+000.
> In Untitled2 at 2
Warning: Rank deficient, rank = 0,  tol =   1.#INFe+000.
> In Untitled2 at 3
Warning: Rank deficient, rank = 0,  tol =   1.#INFe+000.
> In Untitled2 at 4
Warning: Rank deficient, rank = 0,  tol =   1.#INFe+000.
> In Untitled2 at 5
Warning: Rank deficient, rank = 0,  tol =   1.#INFe+000.
> In Untitled2 at 6
为什么呢?
x=0:1:38;
y1=pi.*(2.6-1.05).*10.^3.*9.8.*((0.038.^4-((38-x)./1000).^4)-(0.038.^2-((38-x)./1000).^2).^2/log(0.038./((38-x)./1000)))./8./(10.*10^(-3));
y2=pi.*(2.6-1.05).*10.^3.*9.8.*((0.038.^4-((38-x)./1000).^4)-(0.038.^2-((38-x)./1000).^2).^2/log(0.038./((38-x)./1000)))./8./(15.*10^(-3));
y3=pi.*(2.6-1.05).*10.^3.*9.8.*((0.038.^4-((38-x)./1000).^4)-(0.038.^2-((38-x)./1000).^2).^2/log(0.038./((38-x)./1000)))./8./(20.*10^(-3));
y4=pi.*(2.6-1.05).*10.^3.*9.8.*((0.038.^4-((38-x)./1000).^4)-(0.038.^2-((38-x)./1000).^2).^2/log(0.038./((38-x)./1000)))./8./(25.*10^(-3));
y5=pi.*(2.6-1.05).*10.^3.*9.8.*((0.038.^4-((38-x)./1000).^4)-(0.038.^2-((38-x)./1000).^2).^2/log(0.038./((38-x)./1000)))./8./(35.*10^(-3));
plot(x,y1,'r',x,y2,'k',x,y3,'m',x,y4,'g',x,y5,'c')
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paul249

铁杆木虫 (正式写手)


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小木虫: 金币+0.5, 给个红包,谢谢回帖
可能是对数函数有无穷大的原因

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2楼2013-10-22 02:11:08
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jinwei331

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3楼2013-10-22 06:01:36
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