[問題] 方程式的求解?已回收
cha =
(M*s^2 + c1*s + k1)*(m*s^2 + (c1 + c2)*s + k1 + k2) - (k1 + c1*s)^2
expands =
(M*m)*s^4 + (c1*m + M*(c1 + c2))*s^3 + (M*k1 + M*k2 + c1*c2 + k1*m)*s^2 + (c1*k2 + c2*k1)*s + k1*k2
>> solve(cha,s)
ans =
RootOf(M*X1^4*m + X1^3*c1*m + M*X1^3*c2 + M*X1^3*c1 + X1^2*k1*m + X1^2*c1*c2 + M*X1^2*k2 + M*X1^2*k1 + X1*c2*k1 + X1*c1*k2 + k1*k2, X1)
cha是我的方程式 展開後可以得到 以s為變數的四次方的多項式
想求解多項式的根 照理講會有4個解 但是我的ans 卻怪怪的
是...哪邊出問題了??
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