Vonhelio9048 Vonhelio9048
  • 13-09-2019
  • Mathematics
contestada

T F IfA and B are similar matrices, then AT=BT

Respuesta :

aquialaska aquialaska
  • 17-09-2019

Answer:

Step-by-step explanation:

We know that for two similar matrices [tex]A[/tex] and [tex]B[/tex] exists an invertible matrix [tex]P[/tex] for which

[tex][tex]B = P^{-1} AP[/tex][/tex]

∴ [tex]B^{T} = (P^{-1})^{T} A^{T} P^{T} \\[/tex]

Also [tex]P^{-1}P = I\\[/tex]

and [tex](P^{-1})^{T} = (P^{T})^{-1}[/tex]

∴[tex](P^{-1})^{T}P^{T} = I[/tex]

so, [tex]B^{T} = (P^{-1})^{T} A^{T} P^{T} = (P^{T})^{-1}A^{T} P^{T}\\B^{T} = A^{T} I\\B^{T} = A^{T}[/tex]

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