matlab求解方程的时候出现 is not a valid expression or equation.syms N Q E;[N(1),N(2),N(3),N(4),Q] = solve('Q = 1.109*10^5*( 0.5*N(3)*exp(-0.8-2/3*0.42*E) + N(4)*exp(-0.8-2/3*E))','N(1) = 1.22*10^11*Q/(1.22*10^11 + Q)','N(2) = N(1)*exp(-0.8
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matlab求解方程的时候出现 is not a valid expression or equation.syms N Q E;[N(1),N(2),N(3),N(4),Q] = solve('Q = 1.109*10^5*( 0.5*N(3)*exp(-0.8-2/3*0.42*E) + N(4)*exp(-0.8-2/3*E))','N(1) = 1.22*10^11*Q/(1.22*10^11 + Q)','N(2) = N(1)*exp(-0.8
matlab求解方程的时候出现 is not a valid expression or equation.
syms N Q E;
[N(1),N(2),N(3),N(4),Q] = solve('Q = 1.109*10^5*( 0.5*N(3)*exp(-0.8-2/3*0.42*E) + N(4)*exp(-0.8-2/3*E))','N(1) = 1.22*10^11*Q/(1.22*10^11 + Q)','N(2) = N(1)*exp(-0.8)','N(3) = N(2)*exp(-0.8)','N(4) = N(3)*exp(-0.8-2/3*0.42*E) + N(4)*exp(-0.8-2/3*E)','N(1),N(2),N(3),N(4),Q')
matlab求解方程的时候出现 is not a valid expression or equation.syms N Q E;[N(1),N(2),N(3),N(4),Q] = solve('Q = 1.109*10^5*( 0.5*N(3)*exp(-0.8-2/3*0.42*E) + N(4)*exp(-0.8-2/3*E))','N(1) = 1.22*10^11*Q/(1.22*10^11 + Q)','N(2) = N(1)*exp(-0.8
这个错误是提示表达式有问题