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2018ὃᦪᑖ2018ὃᦪᑖ:ஹ⌱⚪1.ḄA.x>B.x>lc.3,aḄ./
1A.a>3B.a<3c.a23D.aW37.2⊤|(ᑡ+ᐸ+ḄD+A.B.c.D.8.3x+629Ḅᙠᦪyz⊤|}~Ḅ()A.B.c.D.9.[DᑣḄ()A.>3B.<3c.23D.W310.ḄᦪḄ+ᦪ()A.4B.5c.6D.7ஹ'⚪11.2x+l>0Ḅ.12.“xḄ3ᜧ^5,dxḄ1Ḅᜧ^2”,ᑣxḄ.13.Ḅ.14.Ḅᨬ£ᦪ.15.[Ḅx>3,ᑣḄ.16.¤ᐵ^xḄA¥x2-3x+=0¨ᨵªᦪ᪷DḄ.17.Ḅx>-1,ᑣaḄ
218.ᵨDDḄBC⚪“[D®!!”┯±ḄDnS,,.²ஹ³⚪19.=H⚪(1)2x+923(x+2)(2)Oᑏrᐸᦪ(3)ᐗµA¥Ḅxஹyᙳ}ᦪDজ¹aḄºঝᓄ½|4a+5|-|a-4|.20.¿ᙥÁÂãÄ=ᑜÆ£ÄᑁḄÈᓄÉÊᓣÌᦋ⌼D=ᑜÏÐA,BÑÏÒÓÔÕÐᱥ700Ô.ᐸAÏÔÕTÔ16ᐗDBÏÔÕTÔ20ᐗ.×ᐵØᧇ⊤CÚA,BÑÏÔÕḄᡂÛ᳛ᑖÝ93%ß98%.(1)[àáÑÏÔÕᐳᵨ11600ᐗDᑣA,BÑÏÔÕᔜàáäljÔv(2)⌕oᢇÔÕḄᡂÛ᳛ç^95%,ᑣAÏÔÕᨬlnàáljÔv(3)ᙠ(2)Ḅᩩé(Dêë⌱àA,BÑÏÔÕDoàáÔÕḄgᵨᨬçDJìᨬçgᵨlj?
321.Áᖪï=ᑜàÉஹÑÏðñḄòóDTôðñòóḄÉ@õTôðñòóḄl500ᐗDTôðñòóḄZ@2500ᐗDTôðñòóḄZ@2100ᐗ.(1)[ᖪïᵨ50000ᐗᐳàÉðñòó10ôDðñòó20ô.¹ஹÑÏðñḄòóTôÉ@ᔜljᐗv(2)äö÷øï◤¹Dᖪïùúᵨtu7.5ûᐗüàஹÑÏðñḄòóᐳ40ôDdðñòóḄᦪýj^ðñòóᦪýḄ2.জþᖪïᨵ*ÿ ঝᖪ⌱ Ḅᑭᨬᜧὃᫀஹ⌱⚪1.ூᫀBூ"᪆"$%2x>l-x,:x>,"$%x+21,ᑣ$%/Ḅ"01x>l,ᦑᫀ13B.ூᑖ᪆ᑖ5"6$%/7Ḅ89$%Ḅ"0ᯠ;᪷=>ᜧ?ᜧᓽA6ᫀ2.ூᫀc
4ூ"᪆35x>8+2x,"3x>,᪷=ᜧDDᜧ7EFAG9$%Ḅ"0HIxV5,ᦑᫀ13c.ூᑖ᪆"6⚪J7Ḅ$%Ḅ"0K᪷=$%/Ḅ"0ᵫᜧDDᜧ7EFAG9$%Ḅ"0ᯠ;MN9ᫀ7Ḅ89$%"6ᓽA6ᫀ3.ூᫀcூ"᪆3OPQ◤ᓺxTᓱᱏ᪷=⚪W315x-1000-5x>0.2(1000+5x),"3x>133, Xx1ᦪ x2134.ூᑖ᪆ᵫ⚪WA$%ᐵ\X├^_`-Oab-ᡠᨵᓱᱏᓺᑵb02(Oab-ᡠᨵᓱᱏḄᓺᑵb)᪷=$%ᐵ\ᑡ6$%i"$%ᓽAj"4.ூᫀBூ"᪆3ᵫজ3x>-2ᵫঝ:xW2l$%/Ḅ"013-2VxW2ᙠᦪno⊤q13
5ᦑᫀ13Bூᑖ᪆ᐜj6$%/7Ḅ89$%Ḅ"0K᪷=$%/Ḅ"0ḄsHtj6ᐸ"0ᯠ;ᙠᦪno⊤qᓽA6vw5.ூᫀcூ"᪆3• •"$%জ3x<3,"$%ঝ3x22,•• $%/Ḅ"012WxV3,ᦑ⌱c.ூᑖ᪆ᐜj689$%Ḅ"0Kj6$%/Ḅ"0ᓽA.6.ூᫀDூ"᪆3"$%2(x-1)>4,3x>3,"$%a-x<0,3x>a,• •$%/Ḅ"01x>3,ᦑᫀ13D.ூᑖ᪆ᑖ5"6$%/7Ḅ89$%ᯠ;᪷=⚪Jy$%/Ḅ"01x>3,᪷=>ᜧ?ᜧḄtᑣᓽA6a<37.ூᫀDூ"᪆3• •-3ᜐI{|ᙊ~ᢚᔣ2ᜐI|
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9• •$%/Ḅ"01X>-1,¼U3aW-1,• •aW-,ᦑᫀ13a<-,ூᑖ᪆ᑖ5j689$%Ḅ"0᪷=½¾3>ᜧ?ᜧஹ>D?DஹᜧDDᜧ7EFஹᜧᜧDD"¿vᔠ$%/Ḅ"0ᓽAsHaḄ.18.ூᫀ2X3X-1ூ"᪆3᪷=$%Ḅឋ33$%¢£À(ᡈ◀¨)>9ᦪ$%©Ḅᔣᦋª.ÃÄᓽAÅ33,.ᦑᫀ133,.ூᑖ᪆l⚪I⍝ÈÉឋḄÊ⚪᪷=$%Ḅឋ33$%¢£À(ᡈ◀¨)>9ᦪ$%©Ḅᔣᦋª.ᦑᡠᑏᫀÌ⌕ÃÄaÎஹ"⚪19.ூᫀ(1)"32x+923x+62x-3x26-9xW3(2)"3ᵫজxV2ᵫঝ2x>-lx>- ••l$%/Ḅ"013-VxV2
10ÏḄᦪ"130ஹ1(3)"3জᵫজ+ঝ32x=8a+10"Ô3x=4a+5ᵫজ-ঝ32y=-2a+8"Ô3y=-a+4•• ·/Ḅ"13• •·/Ḅ"xஹyᙳIØᦪ••"Ô3ঝ• 4a+5>0a-4Vo/.|4a+5|-|a-4|=4a+5-(4-a)=5a+lூ"᪆ூᑖ᪆(1)ᐜ¦Ü©K⚗ᔠi>⚗MxḄ\ᦪᓄ11,ᓽAj"(2)ᐜj6$%/7Ḅ89$%Ḅ"0KsH$%/Ḅ"0ᯠ;j6$%/Ḅᦪ"ᓽA(3)জᐜ"·/K᪷=x>0,y>0,"ᐵ¶aḄ$%/ᓽA6aḄ?Xঝ᪷=aḄ?ᓄÝᓽA20.ூᫀ(1)"3OÞßA áâxáᑣÞßB áâyáᵫ⚪W3"3ᦑÞßA áâ600áᑣÞßB áâ100á
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