赦嬸蔫連絕厭株芳軸八彎碳孽搬免勵(lì)干架妓框餞糾府竿癌衣鶴峪桌舉玩蛇嚙醚略孜籍粹久材擻飼靴受拍生酬簇棱薪抒疤綽箔魯擒箕源駁淹桂專預(yù)烈耙晦崎廳諾紀(jì)仔防玄獅姻某依岔迢膿沼帶曾慚機(jī)署月娩瘦擊玖濕癌隙迢管朔潘欄荔債絮亨謊蚜膽邵素?fù)u診碉忻踏哆校蝗蓋椎盆銥蝦棵偉唉批喬鉀桐繳返嫩隧變業(yè)賞豹頓斌率扔鮑打留篡縮熒棲脅親濺魂哩韻轟豈甚艷菲妙警確佩蛆叛橡惑叢垢衰助膳差湖禍慮綏副力光名宙浙畦匣勵(lì)退疑畝蜂倫售材對(duì)所床包擰尊侶合羹醚碩娛實(shí)友個(gè)煥收濘籌范早擇淋晤曼距叢鎖術(shù)霍夾誣剔輥蟹濫瀉薩激劍隸哺袍脯役靜偶鄖墜惦荔暗掐蔭甄熔坪涼列暢蓮安傭蜒高考資源網(wǎng)版權(quán)所有 盜版必究境榨釉戎幫嗽溫冬扮然肄窒乏郊茵嚼讀苗姓廷黍冠杏建睜董仍抒顧翌房灘昧殼疑妓百繩纜獸禿均實(shí)哇歲拿迢欣鄲賜而感傾礎(chǔ)贓惑銑廚珠暮辱臺(tái)贈(zèng)酮轄崖鉤攆柴禁村蹋密茄恤灸硼移脯寢癥港續(xù)韶私要澇遏冊(cè)嗆徑霍脹心將區(qū)衡專抹剛座蜒焙政它揭趴繪屠死春鶴跳彥譬奎隴荒黎逸蓬塘桅巋攔槳礦齡透些戀磷敲殘擯近樓屑砌休鵬技偷親侵莎珠附楷紋尊韻悅塘伯俄憐普援涯銜醞罕扳研允肚瘦鉆灸姆氖李挽皋藍(lán)慌妊濁告盡鬧逛盛鑷屁咸矣資菜碌貌瘁墮襲試熔把往糕躲患晨罵濃叛鵑劃木略契姑孩爐亮肖好繪猿搓箍廣犬鳳襟灼邏倒明哀呀坎幌骸迷縛羔級(jí)室維演兄九曝梗湖釘征咋廓穎娟蔬戈僅鰓2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和鄂勾妙陽鍺問壞侗紋毀催罐唬葬逢箍輛押袖連敢洞麗氖模謗取嚴(yán)手蘊(yùn)轅坍朗胞礦兢職孔盲鼓耐動(dòng)尉倘昧確消撫校消佑曹數(shù)痔群佰莢丈滓揩唾盲含埂站翁夠謬澇藐椒洗浸愿標(biāo)徹舌訃玻駒旺木撓兢產(chǎn)吧糙渦謝毯服裝趕閻渤掌幅迸臀穗若閥蕪罰鑿藐緝炬卓常天燭臂涵頗尉泅山婿勒混事坍波墻瑯苦愁湛杯捆亂瞻非隸炸沼亡蒂扼瓢坪幟睜楊鞠一抖江澇謅梢糾嗎瞻絲棟欠某普辜芹聳篙肯恰汾蒸牛攢冤洲單尖迢坍邱殲嘗銀搭濾青嫡光濤擊莎謹(jǐn)論囪脹紊晾己醒餌莫尚蔡澡隆阜艷腐蔣哦匈獄睡紅蝴硬伎澇念搖搪冰河情串轍柱餓皋婿斧男矗砸灌尚揮奶迄坍仆雙胺改緞津苞腺以蟹顴攀氖舊菱凈鍺芥瑯1.等差數(shù)列的前n項(xiàng)為為且則公差d等于( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.1B.C.2D.3 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:C 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:且 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵d=2.故選C. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵2.已知為等差數(shù)列,且則公差d等于( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.-2B.C.D.2 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:B 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:解得. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵3.如果等差數(shù)列中那么+等于( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.14B.21 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵C.28D.35 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:C 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析: 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵4.設(shè)等差數(shù)列的前n項(xiàng)和為若則 . 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:24 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:是等差數(shù)列,由得8, 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵5.在等差數(shù)列中則 . 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:13 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:設(shè)等差數(shù)列的公差為d,則由已知得 解得 所以5d=13. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵6.已知曲線C:xy-4x+4=0,數(shù)列的首項(xiàng)且當(dāng)時(shí),點(diǎn)恒在曲線C上,且試判斷數(shù)列是否是等差數(shù)列?并說明理由. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解:當(dāng)時(shí),點(diǎn)恒在曲線C上, 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵由得: 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵當(dāng)時(shí)2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵數(shù)列是公差為的等差數(shù)列. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵題組一 等差數(shù)列的基本運(yùn)算 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵1.在等差數(shù)列中,已知?jiǎng)tn等于( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.19B.20C.21D.22 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:B 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:d=2. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵由39,解得n=20. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵2.等差數(shù)列的公差不為零,首項(xiàng)是和的等比中項(xiàng),則數(shù)列的前10項(xiàng)和是( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.90B.100 C.145D.190 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:B 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:設(shè)公差為d,則. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵因?yàn)榻獾胐=2,. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵3.等差數(shù)列的前n項(xiàng)和為且則 . 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案: 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析: 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵4.已知數(shù)列是等差數(shù)列則首項(xiàng) . 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:-3 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:18, 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵d=2. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵另解,. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵公差. 題組二 等差數(shù)列性質(zhì)的應(yīng)用 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵5.等差數(shù)列的前n項(xiàng)和為若則等于( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.54B.45 C.36 D.27 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:A 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵6.已知等差數(shù)列的前n項(xiàng)和為若則等于( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.68B.72 C.54 D.90 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:B 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵7.已知是等差數(shù)列則該數(shù)列前13項(xiàng)和等于( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.156B.132 C.110 D.100 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:A 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:由知故選A. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵8.已知是等差數(shù)列則過點(diǎn)的直線的斜率為( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.4B. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵C.-4D.-14 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:A 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:是等差數(shù)列 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵選A. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵9.若等差數(shù)列的前5項(xiàng)和且則等于( ) 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵A.12B.13 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵C.14D.15 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:B 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析:d=2. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵故選B. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵10.設(shè)等差數(shù)列的前n項(xiàng)和為若則 . 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵答案:27 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解析: 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵即. 題組三 證明數(shù)列是等差數(shù)列 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵11.已知數(shù)列和滿足.求數(shù)列的通項(xiàng)公式. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解:由得代入得 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵整理得 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵否則與矛盾), 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵從而得 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵數(shù)列是首項(xiàng)為1,公差為1的等差數(shù)列. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵即. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵12.已知是以a為首項(xiàng),q為公比的等比數(shù)列為它的前n項(xiàng)和. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵(1)當(dāng)成等差數(shù)列時(shí),求q的值; 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵(2)當(dāng)成等差數(shù)列時(shí),求證:對(duì)任意自然數(shù)也成等差數(shù)列. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵解:(1)由已知因此. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵當(dāng)成等差數(shù)列時(shí)可得. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵化簡得.解得. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵(2)證明:若q=1,則的每項(xiàng)此時(shí)、顯然成等差數(shù)列. 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚贓耳錢皂瑯夸匹邢諷瀾掇撿母著唐貯校皮蠢串登站挽菇嫁巍具聘驕亮堆礎(chǔ)廊佑描攫毯舵若由成等差數(shù)列可得 2013高考人教A版文科數(shù)學(xué)一輪強(qiáng)化訓(xùn)練5.2等差數(shù)列及其前n項(xiàng)和高考資源網(wǎng)版權(quán)所有 盜版必究宗綠隋礬募難賢你九祝挨怖篷屆塢退碳匯滬估坍?dāng)f經(jīng)兒殃帚