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找到约 12,326 项符合 M 的代码

function dx=shier(t,x) dx=zeros(2,1); dx(1)=x(1)*(1-0.1*x(2)); dx(2)=x(2)*(-0.5+0.02*x(1));

clear x=0:0.01:1; y=-5*(1-x).^(4/5)/8+5*(1-x).^(6/5)/12+5/24; plot(x,y,'*')

[t,x]=ode45('shier',[0 15],[25 2]); plot(t,x(:,1),'-',t,x(:,2),'*') figure(2) plot(x(:,1),x(:,2))

load gas price1 [h,sig,ci] = ztest(price1,115,4)

load data1 x=data(2,:) mean=mean(x) median=median(x) std=std(x) var=var(x) skewness=skewness(x) kurtosis=kurtosis(x)

load gas [h,sig,ci] = ttest2(price1,price2)

load dj hist(x,10)

load dj [h,sig,ci] = ttest( x ,594)

P=normcdf(1)-normcdf(-1)

load dj [muhat,sigmahat,muci,sigmaci] = normfit(x)