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  • matlab解二元二次方程組!

    matlab解二元二次方程組!
    (x+100)^2+y^2-1.9696xy-196.96y-90000=0
    (x-100)^2+y^2-1.4142xy+141.42y-90000=0

    syms x y;
    solve('y^2+(x+100)^2-1.9696xy-196.96y-90000=0','(x-100)^2+y^2-1.4142xy+141.42y-90000=0','x','y')
    按回車鍵怎么提示
    Error using ==> solve>getEqns at 202' y^2+(x+100)^2-1.9696xy-196.96y-90000=0 ' is not a valid expression or equation.
    Error in ==> solve at 67[eqns,vars] = getEqns(varargin{:});
    數學人氣:401 ℃時間:2020-07-20 16:12:09
    優(yōu)質解答
    應該是
    1.9696xy中間要乘號:1.9696*x*y
    196.96y 1.4142xy 141.42y也是的謝謝!現在已經改過來了,但出現了這種情況: syms x y; solve('(x+100)^2+y^2-1.9696*x*y-196.96*y-90000=0','(x-100)^2+y^2-1.4142*x*y+141.42*y-90000=0','x','y')ans = x: [4x1 sym] y: [4x1 sym]這個x,y值好像不對呀?用 [x,y]= solve('y^2+(x+100)^2-1.9696*x*y-196.96*y-90000=0','(x-100)^2+y^2-1.4142*x*y+141.42*y-90000=0')這個試試
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