请高手帮帮我，十万火急！

来源：百度知道 编辑：UC知道 时间：2024/05/29 07:37:24
请高手帮我用MATLAB把x=-1/6000/t*(-90550*t^3+92550000*t^2-3000000000*t+1000000000000+30*15^(1/2)*(2470597*t^4-859990000*t^3+509995000000*t^2-80000000000000*t+20000000000000000)^(1/2)*t)^(1/3)+1/600*(293*t^2+20000*t-10000000)/t/(-90550*t^3+92550000*t^2-3000000000*t+1000000000000+30*15^(1/2)*(2470597*t^4-859990000*t^3+509995000000*t^2-80000000000000*t+20000000000000000)^(1/2)*t)^(1/3)-1/300*(t-1000)/t
用PLOT语句把图画出来下，谢谢！我的邮箱是d.chengwei@163.com

【1】
>> x='-1/6000/t*(-90550*t^3+92550000*t^2-3000000000*t+1000000000000+30*15^(1/2)*(2470597*t^4-859990000*t^3+509995000000*t^2-80000000000000*t+20000000000000000)^(1/2)*t)^(1/3)+1/600*(293*t^2+20000*t-10000000)/t/(-90550*t^3+92550000*t^2-3000000000*t+1000000000000+30*15^(1/2)*(2470597*t^4-859990000*t^3+509995000000*t^2-80000000000000*t+20000000000000000)^(1/2)*t)^(1/3)-1/300*(t-1000)/t '

>> ezplot(x,[0 1000])

【2】
t=1:50;
x=-1/6000./t.*(-90550.*t.^3+92550000.*t.^2-3000000000.*t+1000000000000+30.*15.^(1/2).*(2470597.*t.^4-859990000.*t.^3+509995000000.*t.^2-80000000000000.*t+20000000000000000).^(1/2).*t).^(1/3)+1/600.*(293.*t.^2+20000.*t-10000000)./t/(-90550.*t.^3+92550000.*t.^2-3000000000.*t+1000000000000+30.*15.^(1/2).*(2470597.*t.^4-859990000.*t.^3+509995000000.*t.^2-80000000000000.*t+20000000000000000).^(1/2).*t).^(1/3)-1/300.*(t-1000)./t
plot(t,x)

怎么两个不一样啊？