2023年辽宁省凌源市第二高考冲刺数学模拟试题含解析

《2023年辽宁省凌源市第二高考冲刺数学模拟试题含解析》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。

2023
ὃᦪᔁὃ1.ᵨ2B⌱⚪ᫀᙠ⚪ᵨ0.5!"#$%⁐'(Ḅ*ᡈ,'-.⚪Ḅᫀᑏᙠ⚪Ḅ⚪0ᑁ஺ᑏᙠ⚪ᔁஹ₝5ᙳ7ᦔ஺2.⚪9:;▅=⚪Ḅ>?⚗AᢥCD⚪஺Eஹ⌱⚪F⚪ᐳ12H⚪IH⚪5ᑖᐳ60ᑖ஺ᙠIH⚪KLḄMN⌱⚗OPᨵE⚗RSᔠ⚪U⌕WḄ஺\2L1.\]^_`஺/Eb=1/0ḄEᩩef`ghij=2klKᑖmR^_`CḄnஹoᯖqqr?ᙠ^_`Cs|uᵨ=3,ᑣw1=A.9B.5C.2ᡈ9D.1ᡈ5222,\]xᙊCᧅ+2=1஺|ᓃ|0ḄnoᯖqᑖmiὡKḄ`xᙊ஺A,3qra~h"ZABF=9O°,s“BF2ḄᕜIIᡂᦪᑡᑣ஺Ḅ᳛i2A.-B.—C.—D.—23223.Fbὃ⌕᣸Eᦻஹᦪஹஹᱥᳮஹᓄஹᱥ¡ᔁ¢£¤¥⊤ᓄ᣸ᙠᱥ9☢ᦪ¨ᱥᳮ©ªs«©᣸ᙠᨬᑣ©Ḅ᣸⊤g®ᐳᨵ¯°A.72±B.144±C.288±D.360±4.ᩈᓈ´Ꮭ¶ENᙊ┵¸ᩈ¹º»¼½ᑮEN¿À᝞ÀᡠÃḄÄᩈ¹ᑣÅᩈ¹ḄÆǯA.247+9&B.48È+9ÉC.48Ê+186D.144È+186225.\]^_`uuE¨=130,ᓃ0ḄoᯖqiËÌqḄ`/¨^_`rḄnஹoÍᑖmABab~

1!"#$%&C'A(EB,|CV|=3|EB|,ᑣ*+,-Ḅ/0᳛2V17B35A.C.?D.323F6.@ᦪBCDzl-i
=l-Fᑣ@ᦪZ9&஺A.1-iB.1+zC.2D.-2K(MN=()7.GH@ᦪZ=l-i,I8ZḄᐳJ@ᦪZ3+i1+z1-3;l+3zA.——B.——C.-------D.—22228.᝞4ᙊ஺27"82GḄ97:;

2B.2012$ᩭÏÐÑÒឋᦟÕÖ×ḄÍLᓰGOPÙÚᢝÜ7Ýᢝᙠ4%$C.Þ2010ß2018OÏG0PḄàáᨬâã¼60ÊäD.Þ2010ᑮ2018ÏÐÑÒឋᦟÕÖ×ḄÍLãᨬåḄæR2012210.\]y=/(x)RDçᙠRḄ᜻éᦪsêxு0ì/(x)=x+ߟߟ3.x«0,ᑣ/(î)V஺ḄñòR()xA.[-2,-1]B.(«,—2]3TÄC.(ߟ࠷,-2]u[-l,0)D.(-oo,-2)U(-1,0]7TTT11.\]éᦪ/'(x)=sin(2019x+°)+cos(2019x-ó)Ḅᨬᜧái“öᙠ÷ᦪøùú½¶û÷ᦪxàᨵ44/(஻z)2,ᑣᦪ஺Ḅ()B.1C.(0஺D.ஹ⚪⚪ᐳ4⚪⚪5ᑖᐳ20ᑖ஺13.!A5Cᡠᙠ$☢ᑁ'(+)=+ᙠAA8Cᑁ,'ᑣ-.AP5CᑁḄᭆ᳛14.1ᖪ3'45ᔜᨴ8Ḅᦈᐭஹ;<=>Ḅ?@᝞BᡠCDᑡFG5HIḄ.ᑭᦈᐭ;<জ2L3ᨴ8ḄᦈᐭḄMᓄ᳛O11L12ᨴ8ḄᦈᐭḄMᓄ᳛PQRঝ;<ᨬUO;<ᨬVḄW6:1ÖঞYZ[\$ᙳᦈᐭ^50_ᐗRটᑭbᨬUḄᨴ82ᨴ8.15.(5ᑖ)1cd⃩fgẆi᪀^ẆklmnᑁḄopqErsஹẬuvwᐗq(xyᐗqz{|}⊦ὁᑮᢙḄᦔ)nḄᵨ4mr2m5,⌱2lm᪵ᑣ⌱<Ḅ2lm5Lᨵ1mḄᭆ᳛.16.3ᝄᑶᑖ᪗ᨵᱯuᝄஹ'uᝄruᝄ.ᵬஹ¡Q¢ᔜ1ᝄᑶ¡£¤¥ᱯuᝄḄᭆ᳛

3:ஹØÙ⚪ᐳ70ᑖ஺ØÙÜᑏuᦻÞßàஹáàâ°ᡈäå`æ஺□17.(12ᑖ)GHᙠAABCt;AஹBஹCḄè7ᑖé8஺b,c,c=40cosC=g.TC(1)B=_,ë஺ḄWÖ4(2)'ᓃ=5,ëAA5CḄ☢î.18.(12ᑖ)᝞4,:ïðABC-44Gt,ñ☢BBCC2ò<ᐸè;,Ḅ#8஺óAB=ACÖ=AB_14c.(1)ëá49õ☢34஺஺Ö(2)ö/48஺=60஺'÷,Qõ☢BBCCᡠᡂḄ;845஺ëB☢;4-ὡG-8ḄúûW.19.(12ᑖ)᝞4ᙠ÷:ïðtABC-AᔧGDஹEஹFஹGᑖé28C,B£,A4,CGtóAB=AC=2(2)ëDᑮõ☢EFGḄþ/.20.(12ᑖ)GHAஹ3ᑖéᙠxÿஹ
|AB|=3,=2•(1)MḄ஺Ḅ(2)#$᳛&ᙠḄ()/+,)஺-.Pஹ஺0£(0,1),|64|2+|6஺7Ḅ89;.kJ

421.(12ᑖ)¦§¨ᦪ(1)©x<0,ª«/(%)<|Rফ©x>0,ឤᨵ/(x)N±+3)x+21nx+l,ªᦪ²Ḅ.22.(10ᑖ)³✌⚗^1ḄH⚗ᦪᑡ¶%·Ḅ¸n⚗r^S”,ᦪᑡCa,EḄ¸஻⚗r^T,,=4¹-0,ᐸ5nP^»ᦪ.(1)ªpḄR(2)ª«ᦪᑡ¶¼·^uWᦪᑡ;(3)«¾“ᦪᑡM2*52%+2ᡂuÁᦪᑡ,ᐸ5Ãyᙳ^᦮ᦪ”Ḅᐙ⌕ᩩÉ“x=Ly=2”.ÊὃÌᫀ'ஹ⌱Î⚪⚪ᐳ12⚪⚪5ᑖᐳ60ᑖ஺ᙠ⚪Ï<ḄÐÑ⌱⚗5ᨵ'⚗Òᔠ⚪Ô⌕ªḄ஺1.Bூ
᪆௃᪷Ö×ØÙ(Úª¥ᑖÛᑭᵨÜÝÙ)Þᓽzª¥PF.2ூ
௃ᵫá2=2/ᡠ{஺=20aâãὡ|-|På=2æK|*-a=2,ᦑ⌱B.ூé௃⚪ὃëᵫ×ØÙ(ÚªÜÝÙ(ÚìíÜÝÙḄ)ÞîïẠ⚪.2.Cூ
᪆௃᪷ÖuÁᦪᑡḄឋò³<óô|õ|,ᑭᵨö÷)ᳮᑡ(ÚùᔠúᙊḄ)Þª¥üᵨ=஺=ü4.Ûᑭᵨö÷)ᳮýþ஺cḄᐵ
ᓄ᳛.

5ூ௃ᵫ||ᡂᦪᑡ,=x,|=%+$||=x+2d.ᵫ%NA5&=90஺()*+ᳮᨵᕜ2+|/S/=|A^/ᓽx2+Wx+dX2=Wx+*X2,ᓄ1=31ᵫ2ᙊ+4AABKḄᕜ67x+x+d+x+2d=3x+3d=12d=4a,ᨵa=3d,ᡠ9x=a,ᡠ9:;<ᵨ>ᙠ@AABE,ὡCᵫ)*+ᳮ2a2=4c2,...᳛D=E.2ᦑ⌱HCூIJ௃KL⚪N⌕ὃQ2ᙊ᳛ḄRὃQ2ᙊḄ+4ὃQᦪᑡḄឋTU%C᫏⚪.3.Bூ᪆௃ᑭᵨᑖZ[ᦪ\ᳮ]ᔠ᣸ᑡᓽ`ூ௃a;Z᣸bᦻdbᓄefᱥ4hiᓄe᣸ᙠfᱥj☢ᨵAE=12h᣸R>alZmᦪenᱥᳮoᐭj4q◀ᨬtu᜜Ḅ4wxᢱCḄ2wᨵAE=12h᣸Rᡠ9z{Ḅ᣸⊤}Rᐳᨵ12x12=144h.⌱3.ூIJ௃K⚪ὃQ᣸ᑡḄᵨzᵨoxRᑖZᐵẠ⚪4.Cூ᪆௃ᵫ;wᙊ┵CᩭḄ┵ᙊ┵☢7=2+2ᙊ┵Ḅ=«3¥-3?hḄ☢ḄᙊA7☢ᒕᑖḄ☢¡75=1¢£+£$m¤,ᑭᵨ┵Ḅ¡¥
ᓽ`.ூ௃ᵫCḄᙊ┵☢7஻=L2+W§X2=6,ᙊ┵Ḅ஻=JW3¨X2—32=6,ᙊ┵©ª1=&+©=6«Ḅ☢ḄᙊA7120஺☢ᒕᑖḄ☢¡7

6S--7vr2+—r2sin-=—x62+-x62xsin-=244+9]ᦑ_`aḄabcE323323V=1S/2=-X24^+9A/3
X6=48^+18A/3.33ᦑ⌱C.ூf௃h⚪ὃklmnopq_`arabst⚪ὃkluvwxyz,ᦪu|}~.5.Dூs᪆௃,)Ḅᯖc4BE',AU,C/7',ᑣCF=3x,BF'=2a+x,CF'=3x+2a,RtACBF'RtAFBF',ᑭᵨᳮ|ᑮᫀ.ூs௃,)Ḅᯖc4B4AF'CF',/,ᑣCFnSx,BF'=2a+x,CF'=3x+2a,AFA.FB,᪷ឋ¡¢£c¤£RfACBF':Cl=CB?+BFQ,ᓽW3X+2஺X¦=W4x7+W2a+x
2,sx=aRMBF:FF'1=BF1+BF'2>ᓽ(2cp=ᱏ+(34,ᦑ¨=gᦑ¦=©.X

7ூf௃h⚪ὃkl,)ª«᳛¬ᙠὃkuvḄ|}~ᔠ¯ᵨ}~.6.Bூs᪆௃°±ᦪḄ²³r±ᦪḄ´ᦪ£µ¶ᔠ|ᓄ¸sᓽ¹.ூs௃±ᦪzº»z(l-i)=|l-¼½2,22(1+/)τ.•7=---------=----------------------L—=1+11-z(l-z)(l+z)ᦑ⌱B.ூf௃h⚪¾⌕ὃk±ᦪḄÀh|±ᦪ²ÁḄᭆÃÄ.ÀẠ⚪.7.Cூs᪆௃](ᵫ±ᦪḄ´ᦪ£µḄÇ◀|ᓄ¸±ᦪ.ூs௃1+z_2-i_1-3/2ᦑ⌱ECூf௃h⚪ὃk±ᦪḄ´ᦪ£µḄ¡ᑣ|ᐳʱᦪÄ.ÀẠ⚪.8.Cூs᪆௃ËÌᙶ᪗Ïᑏ]ѯḄᙶ᪗ᑮ2x+)Ḅ⊤ÓµÔÕᑮᨬᜧ9.ூs௃³DcqBCᡠᙠ()cxADᡠᙠ()cyËÌᙶ᪗Ï

8᪷(A☢¡¥
ᑮgX/ᕜÁXr=s=gXABXACXSin60°,`ᑮᑁᑗᙊḄ71`ᑮIḄᙶ᪗7HB(-73,0),C(A0),A(0,3),0(0,0),M(cos6,1+sin0)0=(cos6+G,l+sine),ä=(å,3),ä=(G,0)ᦑᑮBM=(cos6+G,l+sine)=(>/ix+Gy,3x)ᦑᑮcos0=>/3x+Gy-ᚖ>,sin6=3x—11+sin஺x—______3ccos஺sin/942.4(A=><.2x+y=—/=—i-----1———sin(0-v(p)-\—W2.cos஺sin஺2733333çᓝ§ᦑᨬᜧ´7H2.ᦑµᫀ7C.ூIJ௃·w⚪¸ὃQ¹ᔣ»᪗ᓄḄᵨ9¼½ᦪ}¾Ḅᵨ9ᔣ»7¿ᐵÀ»ḄÁ´Ãᔣ»ÄÅᦪஹz
ஹAÅᦪ]ᔠḄ;ÇÈᔠÉ⚪.ÊËᔣ»ḄÌÍmÉ⚪Îᓄ7z
ᡈÅᦪ´ÐÑ·ÇÉ⚪Ḅ;Ò}R.9.Cூ᪆௃ÓÔ⊤ᑨÖ×w⌱⚗ᔲÚ.ூ௃

9ᵫ⊤᧕AஹBஹ஺⚗ᙳÚ2010ÝCÞGDP7xßa41àáᐗ2018ÝCÞGDP7ã”=90àáᐗ,3.55%4.11%ᑣ2010Ýæ2018ÝCÞGOPḄç´ᜧèéê49àáᦑC⚗┯ì.ூIJ௃K⚪ὃQí[⊤Úîï⊤⚪Ạ.10.Bூ
᪆௃ᑭᵨÅᦪ᜻Ꮤឋ`/(X)ᙠX<0òḄ᪆
n/(0)"óô᪀⌼z
]÷.ூ
௃•"(X)7+4ᙠRøḄ᜻Åᦪ.•/(0)=0./ஹ2ã1<0ò;%>0,/./(-x)=-x------3,x/ஹ2,"(X)7᜻Åᦪ/(X)=-/(-%)=x+—+3(x<0),x<0ᵫ12cüHxW—2ᡈ;lWx<0x+-+3<0ஹxÈøᡠýHþx40,ᑣ/(x)WOḄÿ(f,—2]U[T,0].ᦑ⌱B.ூ௃⚪ὃᦪ᜻ᏔឋḄᵨᑮᑭᵨᦪ᜻ᏔឋḄ᪆!᧕┯$%ᶍ᜻ᦪᙠx=0ᜐᨵ*+,/(0)=0Ḅ-..11.Bூ
᪆௃᪷123ᦪḄ435678ᑮ/(x)=2sin(2O19x+?),9:;<8ᑮᦪḄᨬ>(m,n)?@⌕ᜧCDCEFᕜHᨬI8ᑮJK.ூ
௃ᦪ஻x)=sin(2019x+ᡫcos(2019x-()=qsin2019x+cos2019x+cos2019x+sin2019x)

10=ë(sin2019x+cos2019x)=2sin(2019x+^)ᑣìᦪḄᨬᜧ9c2,M-\m-^=2\m-n\&ᙠíᦪ஻2,஻îï¬íᦪðñᨵ/(ó)4/(%)4/ôᡂÌᑣöx(m,n)Á⌕ᜧ.÷.øùᕜúᓽû2üm—n>-----/.2\m-n\2019min2019ᦑᫀcEB.ூ௃ýù⚪þὃklmÿᦪḄḄḄᵨᦪḄḄឋḄᵨ⚪ᔠ.12.Bூ᪆௃᪀⌼ᦪF(X)=/(X)—1,ᑨ,-R(X)Ḅᓫ0ឋ᜻Ꮤឋᵫ45678/(a)+/(a+l)>2Ḅ=>.ூ௃᪀⌼ᦪ*x)=/(x)—l=ln]H+x,ᵫD>஺=6ᡠG(x)ḄHIJK(T1),M1—X1—X11y1_y/1—rஹF(-x)=ln------x=-ln------x=-\In-----+x=-F(x),ᡠG(x)K᜻ᦪT1—X1+X\14~X/b(x)=ln*+x=ln[—l+Z]+x,ᡠF(x)ᙠHIJ\K]ᦪM*0)=lnl+0=0.ᵫ1Xy1ᐭJa+a+\>0/(iz)+/(a+l)>2#/(a)-l+/(a+l)-l>0,ᓽ++ᡠ=>-g

11஺BCvjK+H=ᡠ2T=TᡠAPஹ஺jᐳMjPA஺☠஺Ḅ8ᑖjᦑ¡=h,ᡠ4jpg஺ᑁḄᭆ᳛2.»¤¥BC33ᦑ¦ᫀKh—3Aூjk௃mn⚪o⌕ὃrjᐳḄᔣ©⊤«ὃrᭆᭆ᳛¬tu®Ạ⚪.14.জ(Dঞூ᪆௃°±ᱏ³´µ¶·¸¬¹-¦ᫀᓽº.ூ௃»uজ2½ᨴ¿ḄᦈᐭḄÁᓄ᳛KÃ=20,11½12ᨴ¿ḄÁᓄ᳛KÄxÅ=20,ᦑÆÇÈ.3-221-11»uঝÊ-ᨬÌÍ2ᨴ¿60ÎᐗÊ-ᨬÐÍ5ᨴ¿Ḅ10ÎᐗᦑÊ-ᨬÌÍÑÊ-ᨬÐÍḄ61,È.»uঞÓÔÕḄ7,8,9ᨴ|ÖᨴḄᦈᐭᑖ×K40Îᐗ,50Îᐗ,60Îᐗ,ᦑÓÔÕḄØᙳᦈᐭK+=50ÎᐗÈ.»uটᑭÛᨬÌḄᨴ¿3ᨴ¿10ᨴ¿Ü30ÎᐗÌu2ᨴ¿ḄᑭÛ80-60=20Îᐗ┯Þ.ᦑ¦ᫀKজঝঞ.ூjk௃m⚪ὃrᑭᵨß³´ᑖ᪆áâ6-Èãtu®Ạ⚪.15.஺5ூ᪆௃ä4åæçᑖ×K2åèçᑖ×K48,évê⌱2åëçìíî᪵ðñᐸ®móK

12(a,஺),(a,c),(a,d),(a,A),(a,B),(b,c),(b,d),(b,A),(b,B),(c,d),(c,A),(c,B),(d,A),(J,B),(A,5),ᐳ15Ö⌱-Ḅ2åëçv½÷ᨵ1åèçᒹúḄ®móK(஺4)3,8)(ûü3,8)(஺4)(஺,8),(",4),3,8),(4,8),ᐳ9Öᦑ⌱-Ḅ2åëçv½÷ᨵ1åèçḄᭆ᳛G=1=h.116.-3ூ᪆௃ᑭᵨ᣸ᑡᔠᑭᵨᐺᭆᱯᝄḄḄᭆ᳛ᓽ.ூ௃!"3ᝄᑶᑖ&᪗ᨵᱯᝄஹ*ᝄ+,ᝄᵬஹ./01ᔜ341ᝄᑶᑣ/0134ᐳᨵ"C9ᵨ=6<᣸=᣸◀ᱯᝄ᜜/⌱ᐳᨵ"C9A9=2<᣸=.21ᦑ/EF3GᱯᝄḄᭆ᳛"P=~=~63ᦑHᫀJ"—3ூ௃L⚪N⌕ὃQᐺᭆḄᭆ᳛ḄRᵨSẠ⚪.Uஹ!H⚪"ᐳ70ᑖ஺!HRᑏᦻ[\]ஹ^]_`ᡈbcd஺17.(1)7(2)14ூ᪆௃34(1)ᙠAABCjcosC=9,GsinC=-,qᔠrstᳮᓽGHᫀ9(2)᪷wxstᳮ+Uyz☢|ᓽGHᫀ.ூ௃(1)•••ᙠAABCjcosC=••~45•/A=»-(5+C),:.sinA=sin(B+C)-sinSeosC+cosBsinC--x-+$x—=%$,252510

13sinAsinCxsinA=7.sinC2c2=a2+b2-2abcosC,•,32—ci~+25—6a,,஺2-6஺-7=0,•!G஺=7,114=—absinC=—x7x5x—=14.225ூ௃L⚪N⌕ὃQrstᳮ+xstᳮ!Uyz!⚪ᐵrstᳮᓄyὃQᑖ᪆+j᫏⚪.18.(1)!᪆9(2).5ூ!᪆௃(1)᪷wzḄᱯ+⚪jᩩ¢GᑮgC¥☢ABGqᔠ§☢ᚖ©Ḅtª+ᑨttᳮᓽ^];(2)®¯°©yᙶ᪗²ᑭᵨᔣ´µ¶!ᓽ.ூ·!௃(1)^]"1•¸z8BCCz:.BCLBC],,/ABJ.B]C,ABcBC=B,t.•.gC,¥☢ABC1QAOu¥☢ABC,,.-.B,ClAO¿AB=AC9,஺BQḄj,AO1BC,t¿•.•BcnBG=஺

14(2)vAB//ABi}...©§AgÁ¥☢84GCᡠᡂḄy©§4?Á¥☢ᡠᡂḄy.AO_L¥☢861GC,,©§ABÁ¥☢GCᡠᡂḄyJZABO,ᓽZABO=45°.ÈJAB=AC9=&ᑣᙠῪ©yUyzA8GjBC=2>/3,}ᡠÌ30=6,CO=4O=30tan300=1.ᙠRhABOjᵫNABO=45°GA0=B0=6Ì஺JÒᑖ&ÌOB,OBஹ,JÓy,zÖ®¯°©yᙶ᪗²O-xyz.ᑣA(0,0,V3),5(73,0,0),4(0,1,0),q(-^,0,0)ᡠÌAX=Û=(G,0,"),3;=(-V3,-l,0)Ý¥☢ABCḄ*Þ=ᔣ´J=x,y,,t}zn-AB=gx-6z=0]]ᑣ,G)=(1,*G,l),ᐗ-BG=-A/3X—y=04¥☢BgG஺Ḅ*Þ=ᔣ´Jß=0,0,1,LtL—\•à1ájcosீäåு=-="—U=—/==—-,'III%Iê5ᡠÌ,☢yA-ÁG-BḄrsëḄᜧíJÁ.î"ï⚪2ÌðᓄJ,☢yA-BC*ᵨḄrsë40=30=6ñᙠåAOBCj_஺òBCḄᚖ§ᚖóJ“õöAH,ᑣNAHOøᡠ,☢y¥☢yḄ⊡yᐜ0"="A//=15,22

15ᨬñᙠRt^AOHjsinNAHO=-75.ூ௃L⚪N⌕ὃQ§☢ᚖ©ḄᑨtÌü,☢yḄ!j᫏⚪.19.1·!᪆923ூ!᪆௃1ᑭᵨ§☢ᚖ©Ḅᑨttᳮ+ឋÿᳮᓽ2DE“ᑣPH/^ADFH☢5CC.fi,ᑭᵨ=ᓃ/EG$%ᓽ.ூ'%௃1*A8=AC=2.BC=4,.-.AB±AC,Q஺13cḄ%.AD±BC,•••ABC-A8G:;<=ᡠ?_L☢ABC,*DE6BC,8cᡠ?OE//A4|..£>£_1_☢48஺..஺£8஺7ADcDE=D,☢ADE2AB=AC=2-j2,BC=4,I8EGᑖK18GLCG:.EF=FG=EG=2y/2-ᵫ1NAPLBC,BB,1AD,I6ᨴn8C=8AD☢BCGg,

16cDEHTUDG᝞WᑣFH/^AD,☢BCC1ZFH[Dᑮ☢EFGḄ]^h,ᵫ%-EFG=VF_DEG9`.6,S&EFG=4*FH•S,DEGᓽ1/Xc=Lx2x,x2&x20,%/?=⌳3411323i•Dᑮ☢EFGḄ]^.3ூj௃k⚪ὃno☢ᚖ:Ḅᑨᳮrឋtᳮஹ$ᑮ☢Ḅ]^ὃnvwxᳮyrz{$%y|}~o☢ᚖ:Ḅᑨᳮrឋtᳮ1$%k⚪Ḅᐵ᫏⚪.x2(256'A20.(1)---1-y-=1(2)4,——4-I25Jூ%᪆௃(1)[ᙶ᪗᪷ᔣḄᙶ᪗z{ᓽᑮ.(2)ὶ:orᙊᵨᙶ᪗⊤ᑮᡠ?|EP¡+1EQ¡=|PQ¡£ᐭ¥¦ᳮᓽ$%.ூ'%௃(1)[A(/,()),8(0,%),ᑣᱏ+y(=9,

173.__..,UUL1UUW,x-2(x0—%)%ª«[M(x,y),ᵫBM=2AM,஺©%=2(0—y).%=3yஹ23Iᵫ©X+(3y>=9,272ᓄMḄCḄ®+y2=i.4-32
[:oPQḄ¯=°©;ZCḄὶ±²'1+4³´2©Zµ©||=0,/>0,[P(X1,yJ,Q(x,y),2224k-64ᑣ¶+·=5+20/'"9ߟ25+100¸ᵫ¹N=—1),EQ={x,y-\),ᑣz2•=º®2+(M—1)(%—1)=᳝%2+13_|½©§-5=(1+)᳝/-gk(᳝+%2)+¼25-648,24k64=(1+___Zx5+20k2+2525+100/5-64-64k2-192k2+64+256k225+100A:2=0,ᦑ:o£ÀJ.EQ.22|EP¡+|EQ|2=|PQ\x2\264(l+F)(25F+4)24k-64-4x5+20^725+100¸64(4+29¸+25%4)25(1+4//Á+4/=/,Â!J

18644+29x——+25x44[-27+667+25/1À஺¡=©25?25?41764=——x25ᵫf=1+4ᦇ2>1>0<-<1,4<|PQIᕦÉ.ᡠ?|Ê|2+|Ë஺¡ḄÌÎ14,.ூj௃½⚪ὃnÏ⚪ᙊr:oÐÑÒÓᙶ᪗⊤ᔣÔÕÖᓄḄᜐᳮᢈÙÚÛ⚪Ü.21.(1)Ý%᪆(2)(-oo,0]ூ%᪆௃C2ஹ41x2/x——21Mx-1(1)ᑭᵨáᦪ$xVOäf(x)Ḅ᩽ᜧÌ/[-§J=çᓽ./•(>)<§(2)è¸é£©’ëx2/*—3x—2l/ix—1x>0,Ág(x)=——AIx>0,ì$íᦪg(x)ḄᨬïÌ%.ூ'%௃(1)•.•íᦪf(x)=x2e3x,/.f(x)=2xe3x+3x2e3x=x(3x+2)e3x.22ᵫF(x)>0,xV--ᡈx>0ᵫf(x)<0,©©(k+3)x+21nx+l,/.k<----------------,x>0,x3xA/ஹx%”—3x—2

19x—1ஹüni.,zxþ2(1+3x)e+21HX-1Ág(x)=-----------------x>0,Â!Jg(x)xÁh(x)=x2(l+3x)e3x+2Inx-1,ᑣh(x)ᙠ(0,+co)ᓫ⌴,

20xߟ0+h(x)—»-00,h(1)=4e3-1>0,ᙠx°£(0,1),h(xo)=0,••!(0,xo),gr(x)<0,g(x)ᓫ⌴"!#£(xo,+oo)gr(x)>0,g(x)ᓫ⌴...g(x)ᙠ(0,+00)Ḅᨬ'()g(xo)=*+,-,.!Vh(xo)=^(l+3x)e3^+21nx-1=0,ᡠ1*=1„"°00621nx0+3/=0,l-21nx1—o6--------0=1,/.21nx+3x=0001+3%ᡠ1xe3,=l:::;Xo=i,21nxo=-3x0,x:e"஺-3x0—21/1X()-11—3x0+3x—1„Q...g(xo)X஺X஺.,•?ᦪkḄA(C)(-8,0].ூEF௃H⚪J⌕ὃMᑭᵨPQRSTὃMᑭᵨUᦪVᨬ(WXYRSTḄឤᡂ\]⚪^ᙠὃM_`abcdeḄᳮXghijWᑖ᪆mᳮno.22.(1)p=2(2)pX᪆(3)pX᪆ூX᪆௃(1)A஻=1ᵫ]=4u(1—஻)஺=0ᡈ2,wx᣸◀p=0Ḅ{|ᑮYᫀ.3(2)7,=j-1(2-S„)2,ᑣ(+i=g—g(2—S,+1)2,"ᑮ3ᓽ+i=4-S“+i-S“ᓄᑮ%=:஺,ᵨᑮPQ.(3)ᑖPQᐙᑖឋW⌕ឋᎷ2^„,2>%+2ᡂSᦪᑡᐸxஹyᙳ᦮ᦪwxᓄ2,-2ᔆ2=1,+14=*-஺-2),wxᑮ4=1,ᑮYᫀ.ூX௃ᵫ=4(஻)0=0ᡈ2,p=o,(1)n—\933

21!"=21+=4-0+—),X஺2=0ᡈ=u(*>0,ᡠ1P=ORᔠ⚪^ᦑP=2:ফ!p=27:=d(2-S")2জᑣ&Iu:(2-*)2ঝঝ-জ¢ᓄ3a+l=4-Sn+l-Sn®9ᑣ3஺஻+2=4-Sn+2-Sn+l@fw@'^4+2=;஺“+|(஻6")¨©4=gqᡠ1ᦪᑡª«¬)Sᦪᑡ4=®:1124(3)ᐙᑖឋ;x=l,j=2,ᵫa஻=2஻_]d¯2o”+1,2ᓽ+2±²-1H,³"214´µ2x—=2”_]+2஻+i9ᓽ2xa+i,2ya+2ᡂSᦪᑡ:nH⌕ឋ;Ꮇᓽ2"“+i,2>%+2ᡂSᦪᑡᐸxஹyᙳ᦮ᦪ¨¶=®ᡠ122,;=3+2·•¸ᓄ2ஹ-¹2=1,ºᯠx>y-2,¼=x-(y-2),©xஹyᙳ᦮ᦪᡠ1!½22ஹ-2ᔆ2>1ᡈ2*-2¾2<1,ᦑ!¿=1,!x=l,y-2=0Tᡂ\ᓽP.ூEF௃H⚪ὃMÀ᪷ÂᦪᑡVÃᦪPQSᦪᑡᐙ⌕ᩩÅ^ᙠὃM_`ḄÆᔠÇᵨno.