询问多个含未知数的矩阵相乘，如何求该未知数的解？

yinghuad

本人初学matlab，最近编程算2x2的矩阵相乘，pn=[1  I(n)*w^2;0  1];een=[1 0;-ek(n) 1];其中仅是w为未知数，矩阵I,和矩阵ek都是已知的2x2的矩阵，当计算t=p5*ee4*p4*ee3*p3*ee2*p2*ee1*p1*[0;1];b=solve(t(1,1))的时候能算出未知数的根，但是当计算算t=p6*ee5*p5*ee4*p4*ee3*p3*ee2*p2*ee1*p1*[0;1]的时候计算变无法进行，出错的提示为：
??? Operation terminated by user during ==> mupadengine.mupadengine>mupadengine.evalin at 117

In ==> mupadsym.mupadsym>mupadsym.char at 30
            s = evalin(symengine,x.ref,'char');

In ==> sym.char at 50
                c{k} = char(A(k).s);

In ==> solve>mupadSolve at 215
charR = char(R);

In ==> solve at 93
[R,symvars,order] = mupadSolve(eqns,vars);

In ==> zizhenpinlv at 25
b=solve(t(1,1));
请问，有谁知道问题出在哪里？它自带的程序理解起来比较费劲啊