如何用matlab解二元方程[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0','222.5-2.7*13-27.75*x-0.45*y.^2-2.05*x*y-0.36*13*y=0','x','y')Error using ==> solve>getEqns at 182' 1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0 ' is n
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![如何用matlab解二元方程[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0','222.5-2.7*13-27.75*x-0.45*y.^2-2.05*x*y-0.36*13*y=0','x','y')Error using ==> solve>getEqns at 182' 1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0 ' is n](/uploads/image/z/2104677-45-7.jpg?t=%E5%A6%82%E4%BD%95%E7%94%A8matlab%E8%A7%A3%E4%BA%8C%E5%85%83%E6%96%B9%E7%A8%8B%5Bx%2Cy%5D%3Dsolve%28%271351.565-14.85%2A13-379.25%2Ax-1.025%2Ay.%5E2-27.25%2Ay+%3D+0%27%2C%27222.5-2.7%2A13-27.75%2Ax-0.45%2Ay.%5E2-2.05%2Ax%2Ay-0.36%2A13%2Ay%3D0%27%2C%27x%27%2C%27y%27%29Error+using+%3D%3D%3E+solve%3EgetEqns+at+182%27+1351.565-14.85%2A13-379.25%2Ax-1.025%2Ay.%5E2-27.25%2Ay+%3D+0+%27+is+n)
如何用matlab解二元方程[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0','222.5-2.7*13-27.75*x-0.45*y.^2-2.05*x*y-0.36*13*y=0','x','y')Error using ==> solve>getEqns at 182' 1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0 ' is n
如何用matlab解二元方程
[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0','222.5-2.7*13-27.75*x-0.45*y.^2-2.05*x*y-0.36*13*y=0','x','y')
Error using ==> solve>getEqns at 182
' 1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0 ' is not a valid expression or equation.
Error in ==> solve at 67
[eqns,vars] = getEqns(varargin{:});
什么情况啊?在线等————————————————
如何用matlab解二元方程[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0','222.5-2.7*13-27.75*x-0.45*y.^2-2.05*x*y-0.36*13*y=0','x','y')Error using ==> solve>getEqns at 182' 1351.565-14.85*13-379.25*x-1.025*y.^2-27.25*y = 0 ' is n
[x,y]=solve()表达式里多了个点符号'.',去掉就可以了.即
[x,y]=solve('1351.565-14.85*13-379.25*x-1.025*y^2-27.25*y=0','222.5-2.7*13-27.75*x-0.45*y^2-2.05*x*y-0.36*13*y=0','x','y')
s=solve(1351.565-14.85*13-379.25*x-1.025*y^2-27.25*y==0,222.5-2.7*13-27.75*x-0.45*y^2-2.05*x*y-0.36*13*y==0)
s =
x: [3x1 sym]
y: [3x1 sym]
s=[s.x;s.y]报错了呃。。。Undefined function ...
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s=solve(1351.565-14.85*13-379.25*x-1.025*y^2-27.25*y==0,222.5-2.7*13-27.75*x-0.45*y^2-2.05*x*y-0.36*13*y==0)
s =
x: [3x1 sym]
y: [3x1 sym]
s=[s.x;s.y]
收起