问题描述:
mathematica解微分方程组含参数~
Dsolve[{x1'[t] == -e100*x1[t] - e110*x2[t] - e120*x3[t] - e130*x4[t] -e140*x5[t],
x2'[t] == -e101*x1[t] - e111*x2[t] - e121*x3[t] - e131*x4[t] - e141*x5[t],
x3'[t] == -0.5*e102*x1[t] - 0.5*e112*x2[t] - 0.5*e122*x3[t] - 0.5*e132*x4[t] - 0.5*e142*x5[t],
x4'[t] == (-1/6)*e103*x1[t] + (-1/6)*e113*x2[t] + (-1/6)*e123*x3[t] + (-1/6)*e133*x4[t] + (-1/6)*e143*x5[t],
x5'[t] == (-1/24)*e104*x1[t] + (-1/24)*e114*x2[t] + (-1/24)*e124*x3[t] + (-1/24)*e134*x4[t] + (-1/24)*e144*x5[t],x1 (0) == 1,x2 (0) == 0,x3 (0) == 0,x4 (0) == 0,x5 (0) == 0},{x1[t],x2[t],
x3[t],x4[t],x5[t]},t]
方程五个 初始条件五个 求解x1[t],x2[t],x3[t],x4[t],x5[t]的表达式,e100,e110~e144 均为参数,运行后只是又把我的内容暑促了一遍
Dsolve[{x1'[t] == -e100*x1[t] - e110*x2[t] - e120*x3[t] - e130*x4[t] -e140*x5[t],
x2'[t] == -e101*x1[t] - e111*x2[t] - e121*x3[t] - e131*x4[t] - e141*x5[t],
x3'[t] == -0.5*e102*x1[t] - 0.5*e112*x2[t] - 0.5*e122*x3[t] - 0.5*e132*x4[t] - 0.5*e142*x5[t],
x4'[t] == (-1/6)*e103*x1[t] + (-1/6)*e113*x2[t] + (-1/6)*e123*x3[t] + (-1/6)*e133*x4[t] + (-1/6)*e143*x5[t],
x5'[t] == (-1/24)*e104*x1[t] + (-1/24)*e114*x2[t] + (-1/24)*e124*x3[t] + (-1/24)*e134*x4[t] + (-1/24)*e144*x5[t],x1 (0) == 1,x2 (0) == 0,x3 (0) == 0,x4 (0) == 0,x5 (0) == 0},{x1[t],x2[t],
x3[t],x4[t],x5[t]},t]
方程五个 初始条件五个 求解x1[t],x2[t],x3[t],x4[t],x5[t]的表达式,e100,e110~e144 均为参数,运行后只是又把我的内容暑促了一遍
问题解答:
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