→ lookyya:應該會是P<1 y=e^(mx) 用b^2-4*a*c<0 10/24 14:04
→ lookyya:根會是複數 會是 yc= C1*Cos?Wt + C2*Sin?Wt 10/24 14:07
→ lookyya:yp 硬下去算就好 10/24 14:09
→ lookyya:更正 m=a(+-)bi yc= C1*(e^at)*Cos(bt)+C2*(e^at)*Sin(bt) 10/25 11:38
→ lookyya:w=b時 yp=A*x*Cos(wt)+B*x*Sin(wt) 找 10/25 11:42
→ lookyya:w=b時 yp=A*x*(e^at)*Cos(wt)+B*x*(e^at)*Sin(wt) 找 10/25 11:44
→ lookyya:w=\=b時 yp=A*(e^at)*Cos(wt)+B*(e^at)*Sin(wt) 找 10/25 11:45
→ lookyya:A和B求出就是答案 不擅BBS回答請見諒 10/25 11:46