Mathematics, 15.06.2021 15:50 geeez65
Choánhxạtuyếntính f :R3 →R3 vàhaicơsởcủa R3 : B={b1 =(1,3,3),b2 =(−n,6,5),b3 =(1,2,2)},
C ={c1 =(2,−n+3,3),c2 =(−5,−1,−5),c3 =(1,0,1)}. Biết: f(b1)=(−5,6,4), f(b2)=(−8,5,2), f(b3)=(−9,−2,−5).
a. Tìmmatrận A=[f]E3 ,từđósuyrabiểuthứccủa f(x1,x2,x3). 1/2
b. Tìm ma trận [ f ]B .
c. Từ [f] ,hãytínhmatrận [f]C .
BB
d. Chovector x=(−2,3,n),hãytính [x]B vàsuyra [f(x)]C .
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Choánhxạtuyếntính f :R3 →R3 vàhaicơsởcủa R3 : B={b1 =(1,3,3),b2 =(−n,6,5),b3 =(1,2,2)},
C ={c1 =(2,...
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