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银虫 (初入文坛)

[求助] 求助下为什么这程序是错的。谢谢

clear all
clc
ms=0.35;
u=5.9e-5;
zr=0.1841;
dtc0=0.0129;
dtu=0.0000174;
t=linspace(0.0001,10000,10000);
b=(ms-u*t)./sqrt(dtc0.^2+dtu.^2*t.^2);
y=normcdf(b,0,1);

我想求出R=Φ{[(ms-u*t)./sqrt(dtc0.^2+dtu.^2*t.^2]}的曲线,Φ中间是正态分布分位点。为什么这个程序不对,因为我通过计算算出来R=0.9时t有五千多,可以确定理论计算没有错误,而按照这个曲线一看就四千多。求指教。

求助下为什么这程序是错的。谢谢
D8(FFY]GZ[2IH0G3WLRFDYY.png
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银虫 (初入文坛)

clear all
clc
ms=0.35;
u=5.9e-5;
zr=0.1841;
dtc0=0.0129;
dtu=0.0000174;
t=linspace(0.0001,10000,10000);
b=(ms-u*t)./sqrt(dtc0.^2+dtu.^2*t.^2);
y=normcdf(b,0,1);
plot(t,y)
2楼2015-07-03 20:51:59
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