Mathematica解常微分方程组问题Mathematica输入:DSolve[{{x1'[t]==k1[t]*(x2[t]-x1[t]),y1'[t]==k1[t]*(y2[t]-y1[t]),x2'[t]==k2[t]*(x3[t]-x2[t]),y2'[t]==k2[t]*(y3[t]-y2[t]),x3'[t]==k3[t]*(x4[t]-x3[t]),y3'[t]==k3[t]*(y4[t
Mathematica解常微分方程组问题
Mathematica输入:
DSolve[{{x1'[t]==k1[t]*(x2[t]-x1[t]),
y1'[t]==k1[t]*(y2[t]-y1[t]),x2'[t]==k2[t]*(x3[t]-x2[t]),
y2'[t]==k2[t]*(y3[t]-y2[t]),x3'[t]==k3[t]*(x4[t]-x3[t]),
y3'[t]==k3[t]*(y4[t]-y3[t]),x4'[t]==k4[t]*(x1[t]-x4[t]),
y4'[t]==k4[t]*(y1[t]-y4[t]),(x1'[t])^2+(y1'[t])^2==
v^2,(x2'[t])^2+(y2'[t])^2==v^2,(x3'[t])^2+(y3'[t])^2==
v^2,(x4'[t])^2+(y4'[t])^2==v^2},{x1[0]==0,y1[0]==a,
x2[0]==0,y2[0]==0,x3[0]==a,y3[0]==0,x4[0]==a,
y4[0]==a,k1[0]==v/a,k2[0]==v/a,k3[0]==v/a,
k4[0]==v/a}},{x1[t],y1[t],x2[t],y2[t],x3[t],y3[t],x4[t],
y4[t],k1[t],k2[t],k3[t],k4[t]},t]
输出为:
{}
请问大侠哪里出错了?