Thi thử ĐH lần 4 2011 D THPT Lê Xoay

ViiSt phuong trinh duong vu0ng g6c chung cia d,dr.. Cho hinh ch6p S.ABCDddu canh d6y bing oud ffi =a.. Tinh th.i ti,ch kh6i chOp di cho.. C6n bd coi thi khdng giii thich gi th€m.. http:/

l TRtroNG THPT r,t, xoay

xannfiQc mrO -2011

pn rnr rHrIDAr HQC IAN w

Mdn To6n, khiii D

Thdi gian: 180 phirt (khdng k€ thoi gian giao dA)

Ciu I

l Tim khoing ddng bi6n, nghich biiSn vd cuc tri cua hdm sO y = xzl'

2.Chohdmsd !=x3-]r*lc6cl6thi 4" (C).Vii5tphuongtrinhtlulngthing Ati6pxricv6'i (C)vacft

hai truc tga dQ Ox,Oy lin luCI t4i 1,8 sao cho OA = 2OB

CAu lI

l Giai b6t phuong trinh r+ log, (9- z') > 3trCn tflp hqp s6 thuc

an'!-2+cot'!

22

2 Tirn nil6 phuong trinh \6;i*.6-r *{r*f [:-r) = mc6nghiQm

Cf,u III

l Giai phuong trinh 2 tanx-4cotx =

2 Giai phuong trinh z3 +322 + 6z + 4 = 0 tr€n tap hqp s6 phric

3 rinh tich phan ,:td:.n

Ciiu IV

l.Chohaicluongthlngd,'ly-O i drly=q-zt

ll

[z=-5+r [z=5+3r

Chfrng t6 r6ng d,,drch6onhau ViiSt phuong trinh duong vu0ng g6c chung cia d,dr.

2 Cho hinh ch6p S.ABCDddu canh d6y bing oud ffi =a Tinh th.i ti,ch kh6i chOp di cho

3 Vi6t phucmg trinh ti6p tuyiin chung c0a hai duong trdn sau:

(c,),(r-r)' +(y-3)2 = 4 vd (cr): x2 * y' =l

. -s6t-FIo vd t€n thisinh: .: SO Uao danh:

C6n bd coi thi khdng giii thich gi th€m

http://www.violet.vn/haimathlx Sưu tầm: Nguyễn Minh Hải- THPT Lê Xoay