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)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 13:12:33
![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)](/uploads/image/z/2686479-15-9.jpg?t=matlab%E6%80%8E%E4%B9%88%E8%A7%A3%E4%B8%80%E5%85%83%E5%9B%9B%E6%AC%A1%E6%96%B9%E7%A8%8B%3F504.4%2B0.131.%2Au.%5E2%3D14.297.%2A%28-19.313%2B295.27.%2A%280.0421.%2Au%29-165.44.%2A%280.0421.%2Au%29.%5E2%2B40.874.%2A%280.0421.%2Au%29.%5E3-3.8445.%2A%280.0421.%2Au%29.%5E4%29)
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?