gvkatashi01

May ban giai giup minh bai nay vs minh dang can gap
Bai 1 :
cho W <u1=(1,-1,5,0);u2=(0,2,-2,-1);u3=(2,0,8,0)> <=R⁴
1/ c/m B={u1,u2,u3} la co so cua W
2/ c/m vector v = (1,1,3,0) thuoc W
3/ tim toa do cua [v]_B
4/cho T = <v1=(1,1,1,-1) ;v2=(2,2,4,-1), xac dinh ko gian W $\cap$ T

Bai 2:
cho B = {u1=(1,2,1) ; u2=(0,1,3) ; u3=(0,0,2) } $\subseteq$ R³ , f:R³$ \to$ R³ la anh xa tuyen tinh co ma tran bieu dien :
[f]_B = $\begin{pmatrix} &[1][3][-2] & \\ &[ 2] [-1] [ 0]& \\ &[1] [ -4][2]& \end{pmatrix}$

1/ c/m b = {u1,u2,u3} la co so cua R3
2/ xac dinh bieu thuc cua f
3/xac dinh Imf
4/Xac dinh Kerf