of rru cr[Ia Hgc ri z lzoor - 200s) - Lop 2 cN
*tON : EAI so z.
' THOI GIAN : 90 PHUT.
Bni 1 : (4tt): Trong kh6ng gian Ra cho dnh x4 tuy6n tinh f
sd cho tru6c li :
V
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- a) Tim Kerf vd Im/
b) Tim c6c co sd tr.ue chuAn c&a Kerf vit lm f .
Bni 2 (3d): rr€n R3 cho d4ns todn f"i* t" 6 & gl
Q@) - 6xl +34 *3i', * 4x,xr+ 4x,xr- 8xrx, \ g 3 4 I
a) Tim ma tr4n cria d4ng toan phuong e(x) \iA _& 3J
b) T]m 1 co sd truc chuAn eria R3 sao cho eoi voi co sd ndy thi dang toli" Y- v '')
-Ahucngtren46 dang chinh tic. _ - _-.%.+ ,
Bii 3 (1d). Trdn ft2, bho ph6p bitin eloi tuyiin tinh / c6 ma tr4n bi€u di6n ld c.
Gii str ma tr{n c c6 circ giittriri6ng l6n luqt ld l vd ), phtnbiQt vi
dou kh6c 0. chung minh ma tr{n c khe nghich vi tim c6c gi6rri ri€ng
cta ma trdn C-t
Bii 4 (2tl). Cho da thr?c f (*) -- xr =2x7
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