Đề-đáp án thi thu ĐH

MpsAD J- mpABCD.. Tim tqa d0 €m tlulnggrc* rry+r tifu tan gi6c ABC CAU IV.. Tr&r mtt ptring tqa dS.. chta lfry thtra cua x voi s6 mfl nguyen trong khaitri&r nhi thrlc: 2fi.fff Ciu V.. Ti

Trang 1

90g.-I Cho hdm sii: y= ' -**l 2x+3 (c)

\-l Ktr6o s6t vi vF tl6 thi hem sO (C).

2 Tim hai di6m phtui bi€t tr6n (C) ttOi xrnng qr a cludng thatte (d): 5x + y + E = 0 cAsl[.

l ci6i phuong I*l ft€n tgp si5 thgc:

2 Gierphuong trinh lugrg gi6c :

l Chs hklh ch6p S.ABCD c6 il6y ABCD h hinh thoi vdi AC :2BD = 2ai LSAD vueg

can tai S Mp(sAD) J- mp(ABCD) Tinh th6 tich kMi c&6p s.ABcD

2 Trong m$t phlng tea dO Oxlz cho A(-l; 0; t), Bkl;2;-l), C(-l ;2;3).

Tim tqa d0 €m tlulnggrc* rry+r tifu tan gi6c ABC

CAU IV.

l Tr&r mtt ptring tqa dS O*y, cho A ABC vdi phfong rrinh du0ng ph&r gi6c tru€ sf,s goc A li (1"): x + 3y - !, -0, ditim *tr,Jt h trung digm canh AC, diem MGI; 5) tlnrgc eluimg thing AB vd di$n tictr A ABC bang 10 (rlvdf) Ttm tqa dO cec dhh A ASC.

2 Bi6t n $ sri tr nhi€n thda miin: eil + zC| z =247 Tinh t0ng c6c he s6 cua c6c e6 hang

TRT/ONcTHPTLO xoAY

TIu mrrDAr Hgc-nfu or

Ndmhgc: 2010 - 20tl

"Thdi gian 180 phrtt) o*rr*rr*r

+.mI=4.fi

2sin2 x - (sin x -cos x) *(sinx -cG x)r = Q.

chta lfry thtra cua x voi s6 mfl nguyen trong khaitri&r nhi thrlc: (2fi.fff

Ciu V.

l.

l Tinhtichph6$: I=l;fr.

2 Giei phuong trinh etu t$p s6 phrlc: zlzl+42+i = 0

H6t

,

GV : N gu-v6n Min h IiliL httn : //w wrtt v i o I eL v 4/h d im at h k

(

Trang 2

lc-) - s

=-{ ;l; r

lL-rr 99 e )c, -.0

Lời giải của bạn: Nguyễn Thị Ánh Tuyết Lớp 12A11

Trang 3

t L.- ,lo n rB d, nL,r" q', o J nin' a t d

K 1.fl)

- O 2l,A>+ 40r"+ U>0 VrA

6+b 4

Trang 4

lvv't

-,<ti.t 2x +uS:r-) =O

$t,

H3 = ,fron

Trang 5

tm)'t $nf

Ce Sft z : q fr @ 5ft=

&'\lf,

1

Trang 6

-Gq; Y' XA d,i;* d'i" xlny ,)n Mquo

Ac 4 r,4t e Ac s Uc) J (n'ul .

, Gy (^) 'I,t dl ry* ttu' ,

-t @) ,^J ,tlyl il = tlc1l"?l;t)

vd, Nl(-t, s) e(a)

0, L)Lt

N

t\l

i'1 C t;

r-t3 5+ ry €

) A=(nc) nA")' I*-1+Ir+ 3,t

- NX T9 Aca c(s ) 2') I d

, sAtrc= Lhc 4 (r;@c))

e d0;@q) = &sasc ,

ftL

€ lrt-rl = u) e

* lz

+

L

V

+

r

L

4

q

o

"0

o

=Q'

f:!-1

o

)

'.P

: L

L

=

U

2

=r)

+4

I

@

)

=

,f

, 3

2

a

j*

:

DLt

,

1)

rt-3 o

+t,

-1

t)

2,A

(s-L

2,A

-

'(s-\ft f,=

t=

\( ri

Trang 7

rl [= -3 a

,TAV ot,

Va" .A h- ta

G , n+1

v nl 3 htt)l

e

Qrt) t zt

Wod

^h

t LCn"r, = Lt'll:

r eL'

nl,.p'l

Br(- 3 ; 9)

Ir , C vb pt $" co'o

(r-t.f -1).(3+i"z-q) <o )8tiln'

C v^., yf (*) ,"1 ,

( -3 r tL - +).(t + t.z-|) zo 4 ft e tl*

r t-t o ABc (; A (1i 'l) ; B ( r; - 7); C(ti z)

0K,{tu)ro

lneN

e Qr.)(ntJ)t L(nr11 (nta') 19Ll

Kh +" u, tr = 44 r,a u n = -L! (t"*)

= I ci Q'"1)11 -K-

b4'

L=o

r/- ^l

vn bo

t

K o

el

',"Q,Tt)",:rr

Jrg6+<r fo;r -,rtl .'

.zs 3 + C?n z"-ib

ol la $1140 '

vdu o6 mar

' 4>r*eg

r3

vr

V"^lt Xrt

$L{6a

Trang 8

= rz*;:{f

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-'' ! LrttGr- '

0"{ m=+ =) {: t'-t

,C

L = l^ "( (t'-t)

- 4 f n-tr-lrf +dt

-= -bC tL+t-L

a , "Ll- l:* t#

/_(, *)(t *'S)

^^(#r t*-,",'{l t ffhl t-* ryll:

Ko.

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