User:Nedtheprotist

${\frac {dx}{dt}}=a(-x+y)$

${\frac {dy}{dt}}=bx-y-xz$

${\frac {dz}{dt}}=xy-cz$

$\ ax-ay=0$

$\ bx-y-xz-0$

$\ xy-cz=0$

$\ x(b-1-z)=0$

$\ -cz+x^{2}=0$

$\ 3\lambda ^{3}+41\lambda ^{2}+8(b+10)\lambda +160(b-1)=0$

$\ C_{1}=(0,0,0)$

$\ C_{2}=({\sqrt {c(b-1)}},{\sqrt {c(b-1)}},b-1)$

$\ C_{3}=(-{\sqrt {c(b-1)}},-{\sqrt {c(b-1)}},b-1)$

${\begin{pmatrix}x\\y\\z\end{pmatrix}}'={\begin{pmatrix}-10&10&0\\b&-1&0\\0&0&-8/3\end{pmatrix}}{\begin{pmatrix}x\\y\\z\end{pmatrix}}.$

${\begin{vmatrix}-10-\lambda &10&0\\b&-1-\lambda &0\\0&0&-8/3-\lambda \end{vmatrix}}=-(8/3+\lambda )[\lambda ^{2}+11\lambda -10(b-1)]=0.$

$\lambda _{1}=-{\frac {8}{3}},\lambda _{2}={\frac {-11-{\sqrt {81+40b}}}{2}},\lambda _{3}={\frac {-11+{\sqrt {81+40b}}}{2}}$

${\begin{pmatrix}u\\v\\w\end{pmatrix}}'={\begin{pmatrix}-10&10&0\\1&-1&-{\sqrt {8(b-1)/3}}\\{\sqrt {8(b-1)/3}}&{\sqrt {8(b-1)/3}}&-8/3\end{pmatrix}}{\begin{pmatrix}u\\v\\w\end{pmatrix}}.$