作业帮matlab 符号变量编程求帮助,想求出p(x,y)=0和q(x,y)=0的解[x0,y0] 为什么报错,说有三个变量?syms x y;p=-y+y^3;q=x;[x0,y0]=solve(p,q,'x','y')报错Warning:1 equations in 3 variables.New variables might be introduced.Warning:Explici
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![matlab 符号变量编程求帮助,想求出p(x,y)=0和q(x,y)=0的解[x0,y0] 为什么报错,说有三个变量?syms x y;p=-y+y^3;q=x;[x0,y0]=solve(p,q,'x','y')报错Warning:1 equations in 3 variables.New variables might be introduced.Warning:Explici](/uploads/image/z/1589029-61-9.jpg?t=matlab+%E7%AC%A6%E5%8F%B7%E5%8F%98%E9%87%8F%E7%BC%96%E7%A8%8B%E6%B1%82%E5%B8%AE%E5%8A%A9%2C%E6%83%B3%E6%B1%82%E5%87%BAp%28x%2Cy%29%3D0%E5%92%8Cq%28x%2Cy%29%3D0%E7%9A%84%E8%A7%A3%5Bx0%2Cy0%5D+%E4%B8%BA%E4%BB%80%E4%B9%88%E6%8A%A5%E9%94%99%2C%E8%AF%B4%E6%9C%89%E4%B8%89%E4%B8%AA%E5%8F%98%E9%87%8F%3Fsyms+x+y%3Bp%3D-y%2By%5E3%3Bq%3Dx%3B%5Bx0%2Cy0%5D%3Dsolve%28p%2Cq%2C%27x%27%2C%27y%27%29%E6%8A%A5%E9%94%99Warning%3A1+equations+in+3+variables.New+variables+might+be+introduced.Warning%3AExplici)
matlab 符号变量编程求帮助,想求出p(x,y)=0和q(x,y)=0的解[x0,y0] 为什么报错,说有三个变量?syms x y;p=-y+y^3;q=x;[x0,y0]=solve(p,q,'x','y')报错Warning:1 equations in 3 variables.New variables might be introduced.Warning:Explici
matlab 符号变量编程求帮助,想求出p(x,y)=0和q(x,y)=0的解[x0,y0] 为什么报错,说有三个变量?
syms x y;
p=-y+y^3;
q=x;
[x0,y0]=solve(p,q,'x','y')
报错Warning:1 equations in 3 variables.New variables might be introduced.
Warning:Explicit solution could not be found.
matlab 符号变量编程求帮助,想求出p(x,y)=0和q(x,y)=0的解[x0,y0] 为什么报错,说有三个变量?syms x y;p=-y+y^3;q=x;[x0,y0]=solve(p,q,'x','y')报错Warning:1 equations in 3 variables.New variables might be introduced.Warning:Explici
说白了就是以下两个表达式的区别：
S=solve('-y+y^3','x','x,y') %你的
S=solve('-y+y^3','x=0','x,y') %正确的
你的表达式中q本意是：x=0,但是单独的'x'被matlab误认为是变量声明部分,这样就只有1个方程“-y+y^3=0”和三个变量：'x','x,y'