matlab解二元cosd方程[x,y]=solve('cosd(78.2-y)/cosd(79.8-y)=478*cosd(78.2-x)/(470*cosd(79.8-x))','cosd(81.1-y)/cosd(78.8-y)=555*cosd(81.1-x)/(565*cosd(78.8-x))','x','y')Error using mupadengine/feval (line 144)MuPAD error:Error:cannot differentiat

matlab解二元cosd方程[x,y]=solve('cosd(78.2-y)/cosd(79.8-y)=478*cosd(78.2-x)/(470*cosd(79.8-x))','cosd(81.1-y)/cosd(78.8-y)=555*cosd(81.1-x)/(565*cosd(78.8-x))','x','y')Error using mupadengine/feval (line 144)MuPAD error:Error:cannot differentiat Matlab 解方程F2 + cosd(48.81)*F1 = 0F6 + cosd(48.81)*F5 - F2 = 0sind(48.81)*F5 + F3 = 0-cosd(48.81)*F1 + F4 = 0-sind(48.81)*F1 + F3 = 1800-F4 - cosd(48.81)*F5 = 1200-F7 - sind(48.81)*F5 - sind(45)*F9 = 0sind(45)*F9 = 1500-cosd(45)*F9 - F8 = 0 用matlab解二元二次方程求方程x^2+y^2=1,x*y=2的解 matlab画二元方程 x^2+(y-(x^2)^(1/3))^2=1 matlab 解三角函数方程弧度与角度问题[theta11,theta12,theta13]=solve('(94*cosd(theta13))/5-10*sind(theta11)*sind(theta13)-(79*cosd(theta11)*sind(theta12)*sind(theta13))/2 - (59*cosd(theta12)*sind(theta11)*sind(theta13))/2=29.4281',' (59*s 如何用matlab解一个二元方程? 请求MATLAB解方程高手：MATLAB解超越方程,详情见问题补充.方程：f=4*((z1-hatx+xt1)^2+((hatx-xt1)*cotd(at))^2-C1)^0.5+((A2-xt1)^2-C2)^0.5-D=0其中：z1 = 20;z2 = 80;hatx = 1;at = 20;at1= [at-5:0.1:at+15];A2 = (z1+z2)*cosd(at)/cosd( matlab plot命令画不出曲线n1=1.5; n2=1; x=0:30:90; y=(n1*cosd(x)-n2*((1-(n1*sind(x)/n2).^2).^0.5))/(n1*cosd(x)+n2*((1-(n1*sind(x)/n2).^2).^0.5));plot(x,y) 这么简单的程序到底哪里出问题了, matlab 三角函数组解这个方程组：最后要求出x（1）和x（2）,l1*cosd(thed1)+l2*cosd(x(1))-l4*0.222-l3*cosd(x(2))=0l1*sind(thed1)+l2*sind(x(1))-l4*0.975-l3*sind(x(2))=0已知条件：l1=49.287;l2=223.1828;l3=100;l4=225.61;t=0:0.1:3;th matlab解二元方程问题,matlab解二元方程问题,求高手解答solve('x*exp(-y/(1.38*600))-176','x*exp(-y/(1.38*1073))-9600','x','y');不出结果啊,其实其中的9600应该是96000000,这样解不出来,是超区域了,还是算不出来? 关于matlab解二元方程的问题>> [x,y]=slove('x+y=1','x-y=9')Undefined function 'slove' for input arguments of type 'char'.错在哪儿了? 解方程x-2y=45解二元一次方程 matlab怎么解y=a+b^x方程 如何求这个二元三次方程组精确解?用matlab他说没有显式解.方程：-100/x^2/y+17/40/x^3/y^2+7505627081381631/9007199254740992/x^2=0,-100/x/y^2+17/40/x^2/y^3=0我输入 clear;>> syms x y;>> [x,y]=solve('-100/x^2/y+17/40/x^3/y^2+7505 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 解方程,二元二次x-2y=-1{ x:y=y:3 MATLAB二元函数求极值小弟一方程：f=x^2+2*x-3*y+y^2,x范围2~6,y范围4~7,求f最小值,用MATLAB编程怎么做? matlab 二元非线性方程请问解二元非线性次方程该如何求解?可以用solve吗?eg:1.35-3*x^(1/6)*sqrt(y)=130.5*pi^2*(x+ y^3)=20 理论上来说这个非线性方程有几组解!谢谢（例子是我乱编的,也许解不出来）!我