matlab solve [x,y,z] = solve('x^2 + y^2 + z^2 = Re^2','(x-x1)^2 + (y-y1)^2 + (z-z1)^2 = d1^2','(x-x2)^2 + (y-y2)^2 + (z-z2)^2 = d2^2','x','y','z');我运行怎么出错啊

matlab解对数方程组[x,y,z]=solve('0.29744*x/(3+0.1*x+y+z)=(log10((3+x+y+z)/(3+0.1*x+y+z)))^2','0.79*x/(3+0.1*y+z)=(log10((3+x+y+z)/(3+0.1*x+y+z)*(3+y+z)/(3+0.1*y+z)))^2','1.25*x/(3+0.1*z)=(log10((3+x+y+z)/(3+0.1*x+y+z)*(3+y+z)/(3+0.*1y+z)*(3+z)/ matlab solve [x,y,z] = solve('x^2 + y^2 + z^2 = Re^2','(x-x1)^2 + (y-y1)^2 + (z-z1)^2 = d1^2','(x-x2)^2 + (y-y2)^2 + (z-z2)^2 = d2^2','x','y','z');我运行怎么出错啊 matlab 四个约束 三个未知数[x,y,z]=solve('-2.2*x+0.25*y-2*z=0','4*x-7.2*y+3*z=0','-2*x+3*y-11.3*z=0','x*x+y*y+z*z=1','x,y,z')这是不对的,就是四个约束条件,三个未知量, matlab 用solve或者fsolve求解方程组clcsyms x y z;eq1 =-(31*x*exp(29301/2500 - (31*x^2)/(10000*z) - y^2/(10000*z) - (661*z)/625))/(5000*z);eq2 =-(y*exp(29301/2500 - (31*x^2)/(10000*z) - y^2/(10000*z) - (661*z)/625))/(5000*z);eq3=exp(29301/2500 matlab中解方程组syms x y z t[x,y,z,t]=solve(2*x+3*y-z+t-2,5*x+y+z-t-13,x-y+2*z+2*t-3,3*x+2*y+2*z+9*t+3)结果:x =-2y =1z =2t =4结果是不对的.做了如下调整：syms x y z t[t,x,y,z]=solve(2*x+3*y-z+t-2,5*x+y+z-t-13,x-y+2*z+2*t-3,3*x+2*y+2 如何matlab求解多元方程x,y,z,u]=solve('48.18577=x/[1+(6280000*x*z)^2]+y/[1+(6280000*y*u)^2]','655.3747=x*{6280000*x*z/[1+(6280000*x*z)^2]}+y*{6280000*y*u/[1+(6280000*y*u)^2]}','49.78774=x/[1+(5709085*x*z)^2]+y/[1+(5709085*y*u)^2]','724.7968=x* 用MATLAB求解y*z^2=35*280.2*280.2','2*x+y=(2*0.0855*y*z)/(35*280.2)','2*x*y+z=y*z/35'syms x y z[x,y,z]=solve('y*z^2=35*280.2*280.2','2*x+y=(2*0.0855*y*z)/(35*280.2)','2*x*y+z=y*z/35');为什么没有反应也不说哪里错了 请问这样的方程组又如何用matlab求解呀?式子：[x,y,z]=solve('(2*x+3*y+z)^2*(x+y)*(1-z)/((1-x-y)*(2-0.5*x)^0.5*(1+3+1.5*x+2*y)^1.5)=3.46e+11','(2*x+3*y+z)^3*(x+y)*(1-z)/((1-x-y)*(1-y-z)^0.5*(1+3+1.5*x+2*y)^2)=0.966','(2*x+3*y+z)*(x+y)*z matlab 符号方程组怎么求这个方程组啊?>> syms x y z;>> [x,y,z]=solve('sin(x)+y^2+logz=9','sin(x)+2^y-z=6','x^2+y+exp(x)=5')? Error using ==> solve at 162Unable to find closed form solution.这怎么回事啊? matlab中solve语句y=input('please input relativeroughness:');z=input('please input Re:');[x]=solve('1/sqrt(x)=1.74-2*log10(2*y+18.7/(z*sqrt(x)))','x');x=subs(x); fprintf('沿程损失系数是%15.14f ',x)当y=0.01,z=8e7结果x=0但是把数直接 matlab解方程中出现is not a valid expression or equation.的错误[x,y,z]=solve('x+y+z=300','((x-y)^2+(y-z)^2+(z-x)^2)^(0.5)/(2^0.5)=50','3^0.5*(y-x)/(2z-x-y)=1') 关于MATLAB解参数方程的问题表达式如下[z]=solve('a+1320*cos(x+y)+1320*cos(x-z)+a*cos(y+z)=2*1320*cos(x)+2a*cos(x)*cos(x)','z'),想从等式中解出z的表达式,但在MATLAB中运行显示错误,提示输入无效,请问是怎么回事? matlab新手,希望能通俗解释一个例子.syms x y z ％建立符号变量[x,y,z]=solve(2*x+3*y-z-2,8*x+2*y+3*z-4,45*x+3*y+9*z-23） matlab问题：[x,y,z]=solve('x+y*exp(8.3*z)=0.96','x+y*exp(9.2*z)=1.56','x+y*exp(9.3*z)=1.48')其运行结果为x = 1.56 - (0.08*exp(9.2*z2))/(exp(9.2*z2) - 1.0*exp(9.3*z2)) y = 0.08/(exp(9.2*z2) - 1.0*exp(9.3*z2)) z = z2请问z2是啥啊? MATLAB解复杂方程组的问题我的程序是这样的syms x y zS=solve('0.0395*x-194.7483*z+835916.8-0.35678*z^2-0.0414*(z-40)^1.25-0.0864*(z^4-40^4)=0','0.01325*(y^4-x^4)+0.009574*(y-x)^1.25+0.32*y-0.84773104*x+3.731-0.00000656*x^2+0.437*z=0','4 matlab解方程组:x+y+z matlab 求方程组求助各位谁能帮我求解下一个方程组,y,z,(y,z为负数)我自己编了下,但是求不出解,紧急,帮我解下,[x,y,z]=solve('x*(exp(y*2.6*10e(-6))-exp(z*2.6*10e(-6)))=1','x*(exp(y*5*10e(-5))-exp(z*5*10e(-5)))=0.5','( 各位高人看下下面用MATLAB计算的的方程哪出错了[x y z w]=solve('x*cos(y)=125*cos(pi/3)','x*sin(y)=275+125*sin(pi/3）','600*cos(y)+150*cos（z）-w=0','600*sin(y)+150*sin（z）=300','x,y,z,w')Error using solve>getEqns (line 292)' x*s