A is a linear-transformation matrix in the standard coordinate system. 

If the coordinate system is changed to βcoordinate system,

 to find the transformation matrix (called the  β-matrix) relative to  β for 

the transformation x |-Ax, where β= {b₁, b₂, b_3},

31.0, -1 are in the  β-matrix.
(A) True.
(B) False.

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