如何用matlab求解该三元一次方程组

解析解没有，你带入g，k，T求数值解吧 >> [H,t1,t2]=solve('H=g/k*t1+g/k^2*exp(-k*t1)-g/k^2','H=340*t2','t1+t2=T','H,t1,t2') Warning: Explicit solution could not be found. > In solve at 81 H = [ empty sym ]