作业帮matlab解方程组,作图时明明有交点,解出来却是虚数?[x,y]=solve('(1.51872*sqrt((-150-x)^2+(100-y)^2)+sqrt((52627.5135-x)^2+(1000000-y)^2))^2-(1001375.9682)^2','tan(-0.6684)-(y-100)/(x+150)','x','y')一个椭圆与直线交点.是不是
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![matlab解方程组,作图时明明有交点,解出来却是虚数?[x,y]=solve('(1.51872*sqrt((-150-x)^2+(100-y)^2)+sqrt((52627.5135-x)^2+(1000000-y)^2))^2-(1001375.9682)^2','tan(-0.6684)-(y-100)/(x+150)','x','y')一个椭圆与直线交点.是不是](/uploads/image/z/2542644-36-4.jpg?t=matlab%E8%A7%A3%E6%96%B9%E7%A8%8B%E7%BB%84%2C%E4%BD%9C%E5%9B%BE%E6%97%B6%E6%98%8E%E6%98%8E%E6%9C%89%E4%BA%A4%E7%82%B9%2C%E8%A7%A3%E5%87%BA%E6%9D%A5%E5%8D%B4%E6%98%AF%E8%99%9A%E6%95%B0%3F%5Bx%2Cy%5D%3Dsolve%28%27%281.51872%2Asqrt%28%28-150-x%29%5E2%2B%28100-y%29%5E2%29%2Bsqrt%28%2852627.5135-x%29%5E2%2B%281000000-y%29%5E2%29%29%5E2-%281001375.9682%29%5E2%27%2C%27tan%28-0.6684%29-%28y-100%29%2F%28x%2B150%29%27%2C%27x%27%2C%27y%27%29%E4%B8%80%E4%B8%AA%E6%A4%AD%E5%9C%86%E4%B8%8E%E7%9B%B4%E7%BA%BF%E4%BA%A4%E7%82%B9.%E6%98%AF%E4%B8%8D%E6%98%AF)
matlab解方程组,作图时明明有交点,解出来却是虚数?[x,y]=solve('(1.51872*sqrt((-150-x)^2+(100-y)^2)+sqrt((52627.5135-x)^2+(1000000-y)^2))^2-(1001375.9682)^2','tan(-0.6684)-(y-100)/(x+150)','x','y')一个椭圆与直线交点.是不是
matlab解方程组,作图时明明有交点,解出来却是虚数?
[x,y]=solve('(1.51872*sqrt((-150-x)^2+(100-y)^2)+sqrt((52627.5135-x)^2+(1000000-y)^2))^2-(1001375.9682)^2','tan(-0.6684)-(y-100)/(x+150)','x','y')
一个椭圆与直线交点.是不是方法用错了,求大侠解答.
写错了,应该是[x,y]=solve('1.51872*sqrt((-150-x)^2+(100-y)^2)+sqrt((52627.5135-x)^2+(1000000-y)^2)-1001375.9682','tan(-0.6684)-(y-100)/(x+150)','x','y')
算出了一组数
- 118.52682061372974085247699653957 + 1.0533345305617757285143717961041e-33*I
- 220.09338601057209292602666326014 - 1.0533112988897284034465078515513e-33*I
- 1132463.3768276476286089146745954 - 4.4867544204611779361326555231486e-39*I
2521605.9888956671204941437985018 + 7.4851375227168231240733748097014e-39*I
那个I是什么,虚数单位吗?
matlab解方程组,作图时明明有交点,解出来却是虚数?[x,y]=solve('(1.51872*sqrt((-150-x)^2+(100-y)^2)+sqrt((52627.5135-x)^2+(1000000-y)^2))^2-(1001375.9682)^2','tan(-0.6684)-(y-100)/(x+150)','x','y')一个椭圆与直线交点.是不是
求出虚数解了
还是用fsolve吧
clear all
clc
f=@(x)([1.51872*sqrt((-150-x(1))^2+(100-x(2))^2)+sqrt((52627.5135-x(1))^2+(1000000-x(2))^2)-1001375.9682;tan(-0.6684)-(x(2)-100)/(x(1)+150)]);
[x y]=fsolve(f,[0 0])