Tim didu ki0n xiic dinh vb rft gon bidu thfc P.. F{hm sd tren ld tldng bidn hay nghich bidn tr€n R?. c"Xi{cdlnhhhrnsdbQenhaty:ffi*b,bidtddttricfiahamsdsongsongvdidudng thf,ngy :1r -.6t-l
Trang 1v sd cmo DUC - DAo r4o
ruAr siNu
*{ * *s;{< *
Legssirylrsttlqi
fnAN I Tr:ic nghidm khr{ch quan {2 ui6n'r)
Chorc cdu trd ldi drtng vd ghi ket qua vdo bdi ldrn
Ndm hoc 2?07-20CI5
- MON TcAN (Thdi gian ldnt bdi l2$ phitt)
Ndu durrng thing y - ax + -5 di qua clidm {-l; 3i thi h0 sd gdc cria nd bang:
B, -l L' "'Z r-1 ',
Tr*ng hinh 1; sin 300 bhng:
B, 2{t2
.F[mh
t
D.+
{J
CAu tr {0,5 didm)
A ,D
CAu ? (0,5 diiim)
A, I
Cflu 3 (A,5 di{m)
!;
,r lja
ra"
2
C.'2a
A, Cd mdt t8m cldi xfmg
C, C6 hai tam ddi xung PLAN II Tu luan {s iliimi
Gi6 tri cua tridu thr?c -=l-* -=1 urng,
B, Khdng c6 tflm ddi xrrng
D C6 v;3 sd tAm.ddi xring
r;
{-J a
cho bidu thirc P =( ; +l ,( 9=.i
-t) (Ja-z "'oJ['!a-"2
F a Tim didu ki0n xiic dinh vb rft gon bidu thfc P.
b Tirn gir{ tri c&a P bidt c =3+2Ji
-Biri2 (2,5 didm) Cho hhm sd bac nhftt y : if *.fi
) " - r
a F{hm sd tren ld tldng bidn hay nghich bidn tr€n R? Vi san?
b T'inh gi6 tri cfra Y khi x = 1+ ".,6 . c"Xi{cdlnhhhrnsdbQenhaty:ffi*b,bidtddttricfiahamsdsongsongvdidudng
thf,ngy :1r -.6)t-l vh rli qua didm (-t; fi l"
Bni 3 (J didm)
Cho dudng trdn (O), bin kfuh R = 6 cm vh didnr f :e-ch O mOJ khging^ 10 cm" Tt A v€ tiep
tuydn A,B (B ld ti6p ditirn) vh cdt tuyen ba't ki ACD (C vi D lh hai giao didm ctra cdt tuydn vh duinrg rdn) Gqi I lh trung didm ctra doan CD
a" Tinh df, dli doan tidP tuYdn AB
b Khi C chay tren duong trbn (O) thi I ch4y tr6ndydng nho?
c Chrlng rninn rnng ticn-aC.eb i.hOng Odifcni C thay ddi tren dudng trbn (O)'
Bni 4 p,5 didm)
(x-v>0
| ''
Cho J tif+vs 4
-t"5
**-.
:!a+21
I
fim gi6 tri nhil nhfit cfia bitiu thfc,S : x*, * l**