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 \ .\ - 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 Ir "-l o TJ: L_, Hay tinh "f (D) L6& J3,'th"il U: ry c6'ma trfln d6i vsi c0 I I *1 I 5 -l I -lI t'- I/" 3 2 -2 2l ,/-"|, 3 -5 5 -5 1 " - 5 +2x3 -4x2 - 4x+4 vdmatr$n - x! +2x s; ol |v 0l I 5 -lJ ti: . c0 I I *1 I 5 -l I -lI t&apos ;- I/" 3 2 -2 2l , /-& quot;|, 3 -5 5 -5 1 " - 5 +2x3 -4 x2 - 4x+4 vdmatr$n - x! +2x s; ol |v 0l I 5 -lJ ti: . trdn C-t Bii 4 (2tl). Cho da thr?c f (*) xr =2x7 Ir "-l o TJ: L_, Hay tinh "f (D) L6& J3,'th"il U: ry c6'ma trfln d6i vsi c0 I I *1 I 5 -l I -lI. z lzoor - 20 0s) - 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 . - a) Tim