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Mathematics, 15.06.2021 17:20 bermudezsamanth

Cho ánh xạ tuyến tính 3 3 f : ℝ^3 → R^3 và hai cơ sở của R^3: B = { b1= (1,3,3), b2=( -5,6,5), b3=(1,2,2)} ,
C={c1=( 2,-2,3), c2=( -5, -1, -5) ,c3=( 1,0,1) } .
Biết:
f b(1) =( 5,6,4)
f b(2 ) =( 8,5,2)
f b(3 ) =( 9, 2, 5)
a. Tìm ma trận A=[f]E3 từ đó suy ra biểu thức của f(x1,x2,x3)
b. Tìm ma trận [f]B
c. Cho vector x=(-2,3,5), hãy tính [x]B và suy ra [f(x)]c

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Cho ánh xạ tuyến tính 3 3 f : ℝ^3 → R^3 và hai cơ sở của R^3: B = { b1= (1,3,3), b2=( -5,6,5), b3=(...
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