[r]
(1)UBND TINH rHAr
xcuvpx
sOcmo
DUC & DAor4o
Bt,
cniNs
rHtlc
KV
rHr
cHeN
Hec
sINH
GI6I
cAr riNH
GrAr
roAN
rnBx
MAY
riNu
cASIo
LaPD
NAU
Hoc
2an-2014Thoi gian:120 phrit (Kh6ng tee
*at
gian giaodi)
Ngny thi:15110/2013Chri:f :
l,
Thi ,sinh duqc sw dqng m$t cdcloqi
mdy t[nh sau: Casio fx-5A0A,{5, ES; CasiaJx-57AMS, ES PLUS; C*sio.fx-500 yNPLUS; Vinacal Vq-SAAMS, 570M5 vd Vinacal-S71M| New 2, Ndtt kkdng ndi gi th\ru hdy tfrch ckinh xdc ddnI
chil'sA ,sau ctfru phiiy3, DA thi gdm cd
04
trang4, Thi sinh ldm bdi tn1'c ti€p vdo
di
thi nfu,,Di€rn bAi thi Girim kh6o I Gi6m kh6o Sd phdch
B[ne s6 BIng
cht
Bei
1(5 dihm):Cho d6y s5 2, 6, 30, 210,
dugc x6c dinh nhu sau: 56 hang th:ir
k
bdng tich cira(
s6 nguy6n tO dAu ti6n (k:
1,2,3, )
niet
ring
c6 hai sO hang cua d6y c6 hiQub6ng 30000
Tim
hai s0 tl6 (2)Bni
26
iriam):Khai
tri6n nhithric
(ry*g''
l'*
dusc mQt da thrlc (bii5nr)
TinhI12
zal.3)
tting c6c hQ sO cira da thrlc tl6
So laqc cdch gidi: t qua:
Bni 3(:i ttidm): Cho d5y sO 1U,,1 x6c dinh nhu
sau:
U,:
tr,U,
*
l
I
Un+:
:
2U,+r-
tU, *
4,
(Vn€ N*,n
l
1)a) H6y 10p quy
trinh
1i0n tpc bAm phirntim
cdc sii hpng cua ddy sO dOb)
Tirn
U,r; U,r;
U,o;[J,,
<iuoi dpng ph6n sOt6i
gian (3)Bni
4(i
itivm):cho
phuongtrinh
,tr ffi
=o (r)
a) ViSt mQt quy trinh b6m phfm gi6i phuong
trinh
(t)
va cho bii5t k6tqui
b) Chung minh
ring
nghi$mtim
dugc o phAn a) ld nh6tSo fuqc cdch
gidi:
KAt qud:Bht
5(
;BC.A'B'C'c6
<i6yABC.li
tam gi6c vuongtqi
B,
AB-2,L3;
,$/)
-
4,26;
A'C=6,39
Gqi
M
ld
trung di€m
cria dopn thdngA'C',,M
li
giaodi6m
ct.rAM
vdA'C
Tinh
th€ tichtnOi
ttrdien
N,4BCvi
khof,ngc*ch tir
A
d}nmdt phin s, (NBC) (4)Bni
6(5iti6@:
Tinh gAn dring gi6trf
lon nh6tvd
gi|tri
nh6 nh6t criahim
s6:2.x2-8x+1
Jlx)=-
2,
-
^ l -r^-rL
So luqc cdclt gidi: t qua: