usigned long xdata data[24]={“1234”,“1324”,“3124”,“4321”...}为啥不对里面”1234“有24种不同的排列组合

usigned long xdata data[24]={“1234”,“1324”,“3124”,“4321”...}为啥不对里面”1234“有24种不同的排列组合 matlab lsqcurvefit拟合问题我自己定义的函数是function [ F ] = myfun4( x,xdata )xdata=[x(1),-x(2);x(2),x(1)]*xdata;xdata=xdata+[x(3),x(4)];xdata(:,1) = xdata(:,1)+x(3);xdata(:,2) = xdata(:,2)+x(4);F=xdata;end主函数中引用为x = lsqcur MATLAB Lsqcurvefit拟合问题 function F=cocl2(x,xdata)F = x(1).*(log(xdata)-1.023.*xdata.^0.5./(1+xdata.^0.5)+x(2).*xdata+x(3).*xdata.^1.5+x(4).*xdata.^2+x(5).*xdata.^2.5+x(6).*xdata.^3)-72.14;end xdata = [0;0.3036;0.6133;0.9418;1.248;1.561;2.232;2 ( )our great motherlandA.long live B.live long C.does live long D.live does long c++中这句话是什么意思*(long long *)d matlab中set(head1,'xdata',x1,'ydata',y1)什么意思? Never mind,it won`t take_____A longB long timesC long time D for long This river is---A 100 metre long B100- metre-long B 100 metre'long D 100 metres long The ruler is too short.Give me___please.A.long B.long one C.a long D.a long one It was not _____ they came back.A.long before B.before long C.long time before D.long after The cat has _______A.the long legs B.long legs C.the legs long D.legs long He could run the machine by himself______.A.long before B before long C a long ago D ago long Long long long Long long long