[r]
(1)m)c vA fJAoT~O PHi) YEN
***
KY THi cAp TiNH GIAI ToAN TREN MAy TiNH CAM
NAM HQC 2008
-1"01>9 THCS
Ngay thi: 10thaJrng [lam 201.119
ThOi gi:m: 150jphlit , kMmg thOi gi:m giao
(f)~ thico04
cAc GIAMKHAo Kt TEN
- -(Do Quy dinh: I~~ -~-I_~ -Balli 1:
1, Philn tJ:ch fa thua s6 t6 P = 2450250 K~t qua:
Cho x t'y Hay 11
s6thich hQ"pviw {)
y 13
13
15 16
L Tinh bi~u
Tim s6 huu
_I X[_-_·_7-_+_f_~_ ·~7_.1 !+~+ 3\ +13l'200820082008
] ,] ] 2: ,2 "2
. -] + - 2+-+
+-7 72 73 33
K~t qua:
x
x[x- 5+ 157+8~-1 ~3 lo+-1%+1~3 - ~~)! J -.
n +_11+ _]1 1_1 + +_3 3_ - 51:5151
17 89 ]13 243 611
(2)407 x+y +t = ~ ~
I
-; B =-cot
60IJ
L
Cho: A phuong
2]
t=~ y:::-:;
8 K};t ?
23 277' e qua z :::-:;
-x-~y z t=-33 14 n 560
24 14 t:::-:;
+-z+-t=-tan' 108°
K~t qua: C :::-:;
L Phan tich thuc sau thira s6: f(x) = -16x2 +
K~t qua: rex) = _
Tim du R chia:
x, y saD cho con chia xxxx cho yyy Neu each
1a 16 du
X=
(3)-Ve
A(
B(
C(
K~t qua:
) ) )
-Ch h :; A h P {] }~
o Up so vo an sau: = ~,-, ,- ,
]6
CDUgthire s6 h\ll1g[6ug quat. Ket qua: U, ~
- n E N, n?:
" -Tinh s6 thu 35. K~t qua:
t6ng 30 s6 d§.lI~" ~."" _.-~tien.
(4)
Tren c<;lnhAB AN = 4CN ABC co di~n tich b~ng don
N cho AM = 3BM
II
K~t
1)( III
VIII IV
hinh duai day, PQ MN song song vai NR d~u co di? dai b~ng a,
Neo dich