这个Matlab为何会出错?>> [x]=solve('(1/x^0.5)=-2*log10(5.66*10^(-4)/3.7+2.51/8000/x^0.5)')Error using ==> mupadmexError in MuPAD command:cannot differentiate equation [numeric::fsolve]Error in ==> sym.sym>sym.mupadmexnout at 2003out = mupadmex(

来源:学生作业帮助网 编辑:作业帮 时间:2024/04/29 21:59:39
这个Matlab为何会出错?>> [x]=solve('(1/x^0.5)=-2*log10(5.66*10^(-4)/3.7+2.51/8000/x^0.5)')Error using ==> mupadmexError in MuPAD command:cannot differentiate equation [numeric::fsolve]Error in ==> sym.sym>sym.mupadmexnout at 2003out = mupadmex(

这个Matlab为何会出错?>> [x]=solve('(1/x^0.5)=-2*log10(5.66*10^(-4)/3.7+2.51/8000/x^0.5)')Error using ==> mupadmexError in MuPAD command:cannot differentiate equation [numeric::fsolve]Error in ==> sym.sym>sym.mupadmexnout at 2003out = mupadmex(
这个Matlab为何会出错?
>> [x]=solve('(1/x^0.5)=-2*log10(5.66*10^(-4)/3.7+2.51/8000/x^0.5)')
Error using ==> mupadmex
Error in MuPAD command:cannot differentiate equation [numeric::fsolve]
Error in ==> sym.sym>sym.mupadmexnout at 2003
out = mupadmex(fcn,args{:});
Error in ==> solve at 76
[symvars,R] = mupadmexnout('mllib::solvefull',eqns,vars);

这个Matlab为何会出错?>> [x]=solve('(1/x^0.5)=-2*log10(5.66*10^(-4)/3.7+2.51/8000/x^0.5)')Error using ==> mupadmexError in MuPAD command:cannot differentiate equation [numeric::fsolve]Error in ==> sym.sym>sym.mupadmexnout at 2003out = mupadmex(
这个可能得用求数值解的函数来解,fsolve
solve只能求出精确解

这个Matlab为何会出错?>> [x]=solve('(1/x^0.5)=-2*log10(5.66*10^(-4)/3.7+2.51/8000/x^0.5)')Error using ==> mupadmexError in MuPAD command:cannot differentiate equation [numeric::fsolve]Error in ==> sym.sym>sym.mupadmexnout at 2003out = mupadmex( Matlab 出错 matlab出错, 两个Matlab问题1.2.第二个若用syms 会出错, 为什么MATLAB中符号变量的使用会出错syms x;y=x*sin(x*x);dy=diff(y,x) Matlab遗传算法工具箱里的crtrp函数为何总是出错? matlab 求和的出错 在matlab中x=100:0.1:1000;y=1/x为什么会出错?谢谢,知道了,是忘了点÷的问题!不胜感激! 当x为何值时,分式x的平方+2x+1分之X-2有意义对不起,题输入出错,这个的值为负数... matlab logical出错logical(x(1).a)(:,1)我是要调用x(1).a这个矩阵的逻辑形式的第1列,结果出错:Error:()-indexing must appear last in an index expression. 为什么这个程序会出错?这个错误的原因是什么? 用matlab绘制y=sin(x)*cos(x)我的程序如下x=0:1:40;y=sin(x)*cos(x);plot(x,y)为什么运行会出错,求指教 matlab 极小化函数f(x,y) = -9*y - 10*z + 100*(-1*log(100-y-z)) - log(y) - log(z) - log(50-y+z)matlab怎么极小化这个函数,我搞的老是出错 用matlab求微分,微分有条件限制dx/dt=ax(1-bx)条件限制:x(0)=x0;x0!=0;x0!=1/b;x0>0这个用matlab 怎么求 我算很久了 总是出错 用matlab解常微分方程组,为什么会出错?调用的是dsolve的函数. matlab中算这个函数的最大值x=1:1:501;y=(1.64-0.024x)*sin(0.2x)-0.64exp(0.1/x);然后就出错,0.1/x不让我用. matlab中的nthroot函数的用法是什么啊?我的英语水平不行,看不懂它的英文解释.为什么我输入nthroot(9,2),matlab会出错.出错提示是Error using ==> nthrootIf X is negative,N must be an odd integer. matlab积分出错:Explicit integral could not be found.syms x;int((cos(pi*cos(x))+1)^2/sin(x),0,pi)Warning:Explicit integral could not be found.有什么其他的方法,可以找到这个积分的解?