dsolve解微分方程组问题出在哪里?如果写方程如下：[x1,y1]=dsolve('Dx1=0.08*(1-(1+0.15)*x1/800+0.01*y1/900)*x1 ,Dy1=0.07*(1-(1+0.1)*y1/900+0.008*x1/800)*y1','x1(0)=2,y1(0)=10')则不能得到解；但是如果方程如下：[x1,y1]=ds

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