[r]
(1)UBND TINH rHAr xcuvpx sO cmo DUC & DAo r4o
Bt, cniNs rHtlc
KV rHr cHeN Hec sINH GI6I cAr riNH
GrAr roAN rnBx MAY riNu cASIo LaP D
NAU Hoc 2an-2014
Thoi gian:120 phrit (Kh6ng tee *at gian giao di) Ngny thi:15110/2013
Chri:f :
l, Thi ,sinh duqc sw dqng m$t cdc loqi mdy t[nh sau: Casio fx-5A0A,{5, ES; CasiaJx-57AMS, ES PLUS; C*sio.fx-500 yNPLUS; Vinacal Vq-SAAMS, 570M5 vd Vinacal-S71M| New 2, Ndtt kkdng ndi gi th\ru hdy tfrch ckinh xdc ddn I chil'sA ,sau ctfru phiiy
3, DA thi gdm cd 04 trang
4, Thi sinh ldm bdi tn1'c ti€p vdo di thi nfu,,
Di€rn bAi thi Girim kh6o I Gi6m kh6o Sd phdch
B[ne s6 BIng cht
Bei 1(5 dihm):
Cho d6y s5 2, 6, 30, 210, dugc x6c dinh nhu sau: 56 hang th:ir k bdng tich cira
( s6 nguy6n tO dAu ti6n (k : 1 ,2,3, ) niet ring c6 hai sO hang cua d6y c6 hiQu
b6ng 30000 Tim hai s0 tl6
(2)Bni 26 iriam):Khai tri6n nhi thric (ry*g'' l'* dusc mQt da thrlc (bii5n r) Tinh
I12 zal.3)
tting c6c hQ sO cira da thrlc tl6
So laqc cdch gidi: t qua:
Bni 3(:i ttidm): Cho d5y sO 1U,,1 x6c dinh nhu sau: U, : tr, U, * l
I
Un+: : 2U,+r -
tU, * 4, (Vn € N*,n l 1)
a) H6y 10p quy trinh 1i0n tpc bAm phirn tim cdc sii hpng cua ddy sO dO
b) Tirn U,r; U,r; U,o; [J,, <iuoi dpng ph6n sO t6i gian
(3)Bni 4(i itivm):cho phuong trinh
,tr ffi = o (r)
a) ViSt mQt quy trinh b6m phfm gi6i phuong trinh (t) va cho bii5t k6t qui
b) Chung minh ring nghi$m tim dugc o phAn a) ld nh6t
So fuqc cdch gidi: KAt qud:
Bht 5( ;BC.A'B'C'c6 <i6y ABC.li tam gi6c vuong
tqi B, AB -2,L3; ,$/) - 4,26; A'C =6,39 Gqi M ld trung di€m cria dopn thdng
A'C',,M li giao di6m ct.r AM vd A'C Tinh th€ tich tnOi ttr dien N,4BC vi khof,ng
c*ch tir A d}nmdt phin s, (NBC)
(4)Bni 6(5 iti6@: Tinh gAn dring gi6 trf lon nh6t vd gi|tri nh6 nh6t cria him s6: 2.x2-8x+1
Jlx)=- 2,
-
^ l -r^-rL
So luqc cdclt gidi: t qua: