matlab怎么解一元四次方程?504.4+0.131.*u.^2=14.297.*(-19.313+295.27.*(0.0421.*u)-165.44.*(0.0421.*u).^2+40.874.*(0.0421.*u).^3-3.8445.*(0.0421.*u).^4)

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matlab怎么解一元四次方程?504.4+0.131.*u.^2=14.297.*(-19.313+295.27.*(0.0421.*u)-165.44.*(0.0421.*u).^2+40.874.*(0.0421.*u).^3-3.8445.*(0.0421.*u).^4)

matlab怎么解一元四次方程?504.4+0.131.*u.^2=14.297.*(-19.313+295.27.*(0.0421.*u)-165.44.*(0.0421.*u).^2+40.874.*(0.0421.*u).^3-3.8445.*(0.0421.*u).^4)
matlab怎么解一元四次方程?
504.4+0.131.*u.^2=14.297.*(-19.313+295.27.*(0.0421.*u)-165.44.*(0.0421.*u).^2+40.874.*(0.0421.*u).^3-3.8445.*(0.0421.*u).^4)

matlab怎么解一元四次方程?504.4+0.131.*u.^2=14.297.*(-19.313+295.27.*(0.0421.*u)-165.44.*(0.0421.*u).^2+40.874.*(0.0421.*u).^3-3.8445.*(0.0421.*u).^4)
>> fun=inline('-504.4-0.131.*u.^2+14.297.*(-19.313+295.27.*(0.0421.*u)-165.44.*(0.0421.*u).^2+40.874.*(0.0421.*u).^3-3.8445.*(0.0421.*u).^4)','u')
fun =
Inline function:
fun(u) = -504.4-0.131.*u.^2+14.297.*(-19.313+295.27.*(0.0421.*u)-165.44.*(0.0421.*u).^2+40.874.*(0.0421.*u).^3-3.8445.*(0.0421.*u).^4)
>> fzero(fun,[4,6])
ans =
4.9611
u=4.9611

哥很负责任滴告诉你上面的程序不对,solve的引用不对。a=solve('(a^3-2*a^2)/(a^2-a-1)=0.995'),表达式要用单引号框起来,而且b不能那样赋值引用。...

你是谁 啊 怎么 和 我们 老师 留的 题一样啊 啊 是 刘树伟老师的学生?