ĐỀ THI KSCL ĐẠI HỌC NĂM 2012 LẦN 1 MÔN TOÁN KHỐI D ppt

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Cho
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cria * dQ duong thing
!
=mx-m+z
cht
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tai
hai di6m
phAn
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nho
nhAt.
C6u
II.
(2,0

cfiAm)
1. Gi6i
phucmg
trinh: sin'x(sinx
+ cosx) +
cos'x(cosx
-
sinx;
*
I
4
2.
Giei
h9
phucrng
trinh:
ft+x*xy=5y
ft*"'y'-5y'
tl"
*7
-
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gi6i
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C6u
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Cho
hinh ch6p S.ABCD co d6y ABCD
le hinh chfr nhflt,
s,l
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phdn g
d6y
g6c
450
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AB
=
a
. Tinhthd
tich khdi chop
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A
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A. Theo chucrng trinh

Chuin
Cfiu
VI.a.(2,0
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Cho
tam
gi6c
ABC
cdn tai d,bi6t
phuong
trinh ducmg
x+2y-5=0
vd
3x
-y+7
=0.
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phucrng
trinh ducrng
thdng
di6m D(1;-3).
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phdng
v6i
hQ trpc to4 dQ
Oxy, cho dulng tron
(C)
co
phucrng

trinh:
*'+
y'*2x-6y+6=0
vd
di6m M(-3;r).Gqi A
vir
B
IdctrctiOp
di6m ke tir M
ddn
e).
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diOm H ldhinh
chi6u
vudng
g6c
cua di6m M
tr}n AB .
Cf,u
VII.a.
(1,0
ili€m)
Tim sO
hang
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UiCt n9 s5 cria si5 h4ng thf 3 bing 36.
B. Theo chutrng trinh Nfing cao
Cdu VI.b.
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trung
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A,B,C
.
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thing AB,BC
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,
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td
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tai
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suy
ra
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phucrng
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g
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ll AB)
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a
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e AC
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ldm theo
cdch
khdc drtng
phdn
ndo thi vfin
cho
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phdn
tuong drng.

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