高考数学真题分类汇编专题06数列文

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1Ḅᦪᑡ5“,Ḅ⚗S-4S,ᑣa—()s4w1719(A)—(B)—(C)10(D)1222ூᫀ௃Bூ᪆௃:4=1,S=4S,84+#x8x7=4(4q+gx4x3),$q%;/.84119a,=a.+9d=—F9=—,ᦑ⌱B.1o0'22ூὃ+,-௃ᦪᑡ.⚗/0n⚗/ூ12+3௃ᦪᑡ4⚪ᐵ7ᙠ9:;ᦪᑡ,<ஹឋ?ஹ.⚗/ஹn⚗/,ᑭᵨBCDE/ᑡFᐵ9✌⚗HḄBCF✌⚗Hᑭᵨᦪᑡឋ?IJKᓄMN.2.12015
ὃ▷Pᦻ13௃Q-ᦪ1010ḄRSᦪ᪀ᡂᦪᑡᐸW⚗2015,ᑣXᦪᑡḄ✌⚗ூᫀ௃5ூ᪆௃YSᦪᨵ2஻+1\,ᑣ]+]=1010,*=2015,^4+4,_=2%+1ᡠJq=5#YSᦪᨵ2஻\,ᑣb+஺,F=1010x2=2020,%,=2015,^q+/“=%+஺,ᵨᡠJ4=5#ᦑᫀ5ூὃ+,-௃ᦪᑡḄឋ?.ூ12+3௃1.e⚪ὃfᦪᑡḄឋ?YSᦪgᨵIhᏔᦪ\jᨵIh᜻ᦪ\.ᯠmᑭᵨᦪᑡឋ?n+஻=p+qn=a஺+a.2.e⚪o9pẠ⚪rstNḄquvឋ.3.12015
ὃwxᦻ13௃y\zᦪ஺{cᡂ|ᦪᑡᐸQ஺=5+2ᢣc=5-2,ᑣ஺=.ூᫀ௃1

1ூ᪆௃~y\zᦪa,b,cᡂ|ᦪᑡᡠJ6=ac=(5+2(5-2⛴=1,~0>0,ᡠJ=1,ᡠJᫀ1.ூὃ+,-௃|Q⚗.ூ12+ᨒ௃e⚪⌕ὃfḄ|Q⚗o9᧕⚪.⚪⌕ᢕᐵ7g“zᦪ”ᔲᑣ᧕F┯.e⚪◤⌕¡Ḅ¢+|Q⚗Ḅᭆ¤ᓽa,G,ᡂ|ᦪᑡᑣG§aHᓃḄ|Q⚗ᓽG2=M.4.12015
ὃ«¬ᦻ16a/®ᦪ—Ḅ°\±²Ḅ³+´஺,-2Yy\ᦪI〉¶᣸¸mᡂᦪᑡjI〉¶᣸¸mᡂ|ᦪᑡᑣp+qḄ»9_ூᫀ௃9ூ᪆௃ᵫ¿À,ᳮ$“+/?=஻ab=q,ᑣ஺>0*>0,¶4{,R2〉¶᣸¸mᡂ|ᦪ4ᑡ-2Ä|Q⚗ᦑ஺/=4=4,¶〉¶᣸¸mᡂᦪᑡ-2ı448Q⚗¶aQ⚗2a=2—2,$஺=1,8=4#¶ÆQ⚗2=a—2,aaa$a=4,b=l,ÇÆᡠÈa+b=p=5,ᡠJ஻+q=9.ூὃ+,-௃Q⚗|Q⚗.ூ12+3௃e⚪J³+ÉÊὃf|Q⚗Q⚗ᐸQᑖÌÍÎÏÐÑᳮ⚪᪶Ó.y\ᦪᡂᦪᑡᡈ|ᦪᑡ⚗H⚗ÕÖᨵ׸ḄØQ⚗ᡈ|Q⚗ÙRḄᦑIJᑭᵨQ⚗ÚÛÍÎo9Ü⚪.5.12015
ὃÝÞᦻ104ᦪᑡd±³./2%ᡂ|ᦪᑡ´2q+a,=1,áij4=,d=.2ூᫀ௃--13ூ᪆௃ᵫ⚪I$(q+2d)2=(q+d)(q+6d),ᦑᨵ34+2d=0,^~2q+4=l,2ᓽ3a,+(7=1,ᡠd=—1,4=—.3ூὃ+,-௃1.ᦪᑡḄ,<.⚗/#2.|Q⚗.ூ12+3௃e⚪⌕ὃfᦪᑡḄ,<.⚗/.⌕ὃfèéᑭᵨᦪᑡḄ,

20|Q⚗Ḅឋ?¬êBCSëᦪᑡḄ✌⚗H.e⚪o9᧕⚪⌕ὃfèézvtNḄh{.6.(2015
ὃ᪗1,ᦻ13ᦪᑡ4Qq=2,஺,ᵨ=2%,4,Ḅ஻⚗S=126,ᑣ஻=.ftூᫀ௃6ூ᪆௃Vq=2,a=2aᦪᑡ&✌⚗2,|2Ḅ|ᦪᑡn+ins,=—=126,2"=64n=6."1-2ὃ+|ᦪᑡ,2),ᑣᦪᑡ,Ḅ9⚗9.ூᫀ௃27ூ᪆௃2a”=+ô,õa,=4+/ö÷Jø✌⚗|ḄᦪᑡoxR1Sg=9x1+y^x±=9+18=2722ூὃ+,-௃e⚪⌕ὃfᦪᑡḄ,<ஹ.⚗/஻⚗/Ḅᵨ.ூ12+3௃hÿ⌴ᑨᦪᑡḄᡈᵨ⚪Ḅᐵ◤⌕ὃ!"#$%&!⚪'ὃ()*+ᦪᑡḄ,Ḅ-ᵨὃ()ὃḄ,./01.8.120158ὃ9:ᦻ17=*+ᦪᑡ>4@A«=4,4+஺7=15.2(I)Kᦪᑡ>4@ḄL⚗N(II)OP=2""<+஻K4+^+4+…+ᓽḄW.ூYᫀ௃(I)a“=஻+2N(II)2101.

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Ḅ+`q+d=4ᵫbcde(q+3d)+(஻]+6d)=15a=3df}d=lᡠh%=q+-1)d=஻+2.IIᵫIjdᒹ=2஻+஻.ᡠh4+l+byH----FA஺=2+1+_2~+2m+_2^+3mH-----h_2"m+10m=_2+22+23+.+2m+1+2+3+.+1021-2'°1+10x10=-1^2~+2=_2n-2+55=2"+53=2101.ூὃnop௃1ஹ*+ᦪᑡL⚗r2ஹᑖtK.ூuvnw௃xo*+ᦪᑡḄ,y.ᡠhxo*+ᦪᑡ◤⌕z{|}ᩩKᦪᑡn⚗ᵨḄᨵr_1⚗_LL⚗ᡂz⚗Ḅ+ᡈᙠn⚗#ḄAmN2┯p_〉ᔠ*+ᦪᑡh*ᦪᑡmN_3ᑖtK_᪷ᦪᑡL⚗Ḅᱯnᐸᑖ`*+ᦪᑡKh*ᦪᑡKmN_4᜻Ꮤ⚗ᑖ᪆_〉ᔠ᦮{ᦪᑡᱯ¡᜻ᦪ⚗¢£hᏔᦪ⚗¢£ᨵḄ*+ᦪᑡᱯᡈ*ᦪᑡᱯm.9.[20158ὃᓅ¥ᦻ16]_¦⚪§ᑖ13ᑖmbc*+ᦪᑡ>%@§¨%+%=1஺%-஺3=2.IK4
ḄL⚗NHO*ᦪᑡª@§¨஺2=%%=%«r%¬ᦪᑡ4
Ḅ®⚗*¯ூYᫀ௃_I4=2஻+2NH°¬ᦪᑡ4
Ḅ63⚗*.

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6(2)%&'(஺Ḅ)gaJ-./ᦪᑡ'(3)ᦪᑡ24,3Ḅ4⚗67.ூ9ᫀ௃(1)(2)%&<=᪆?(3)a“=(2஻—1)AB.ூ=᪆௃C⚪ᑖ᪆'(1)F஻=2GH஺4Ḅ!?(2)ᐜJ4s“+2+55“=8sᔣ+(n>2)Mᓄ-4—%,Oᑭᵨ./ᦪᑡḄRSG%TU./ᦪᑡ?বᐜᵫফGHᦪᑡ1%Ḅ4⚗67OJᦪᑡ2஺ᔣ)3%3Ḅ4⚗67Mᓄ-ᦪᑡ.YTU22[..\ᦪᑡ]^GHᦪᑡ2_3Ḅ4⚗67.C⚪=᪆'(1)஻=2,4s4+5⎃=8⎃+aᓽ4(1+|'+?+%)+5(1+'|)=8l+Lj+L=H'g=((2)h-4s,+2+5S“=85,M+S,T(=2),ᡠj4%2—4S“M+S”—S“T=4S”+4S”(n>2),ᓽ4a“+2+a=4a(n>2),h-4a+q=4x'+l=6=4%,ᡠjnll+]34a,+2+a“=4%+i)h-_1“nߟ5"ᔣ=4a“+2-2%=44ᵨ)஺“)2rᵨ=2%-%=1_ᡠjᦪᑡ_l4a“+1-2a“4a-2«„2(2a-a)2aan+1n+]n஻+i2”g%>Uj᜜);q=1-✌⚗,6/-;Ḅ./ᦪᑡ1,6/-Ḅ./ᦪᑡᡠj(3)ᵫ(2)'ᦪᑡUj4=w-✌⚗22

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