㈠ 甯鎴戝仛寮犳暟瀛﹁瘯鍗,瑕佹眰鍒濅竴涓婂唽鍓崭笁鍗曞厓鍐,婊″垎120 镐!!!!!!!! 楂桦垎鎭璧
链夌悊鏁扮粌涔
缁冧範涓(B绾)
(涓)璁＄畻棰:
(1)23+(-73) (2)(-84)+(-49) (3)7+(-2.04) (4)4.23+(-7.57) (5)(-7/3)+(-7/6) (6)9/4+(-3/2) (7)3.75+(2.25)+5/4 (8)-3.75+(+5/4)+(-1.5)
(浜)鐢ㄧ亩渚挎柟娉曡＄畻:
(1)(-17/4)+(-10/3)+(+13/3)+(11/3) (2)(-1.8)+(+0.2)+(-1.7)+(0.1)+(+1.8)+(+1.4)
(涓)宸茬煡:X=+17(3/4),Y=-9(5/11),Z=-2.25,
姹:(-X)+(-Y)+Z镄勫
(锲)鐢">","0,鍒檃-ba (C)鑻ba (D)鑻a<0,ba
(浜)濉绌洪:
(1)闆跺噺铡籥镄勭浉鍙嶆暟,鍏剁粨鏋沧槸_____________; (2)鑻a-b>a,鍒檅鏄痏____________鏁; (3)浠-3.14涓鍑忓幓-蟺,鍏跺樊搴斾负____________; (4)琚鍑忔暟鏄-12(4/5),宸鏄4.2,鍒椤噺鏁板簲鏄痏____________; (5)鑻b-a<-,鍒檃,b镄勫叧绯绘槸___________,鑻a-b<0,鍒檃,b镄勫叧绯绘槸______________; (6)(+22/3)-( )=-7
(涓)鍒ゆ柇棰:
(1)涓涓鏁板噺铡讳竴涓璐熸暟,宸姣旇鍑忔暟灏. (2)涓涓鏁板噺铡讳竴涓姝ｆ暟,宸姣旇鍑忔暟灏. (3)0鍑忓幓浠讳綍鏁,镓寰楃殑宸镐荤瓑浜庤繖涓鏁扮殑鐩稿弽鏁. (4)鑻X+(-Y)=Z,鍒橷=Y+Z (5)鑻a<0,b|b|,鍒檃-b>0
缁冧範浜(B绾)
(涓)璁＄畻: (1)(+1.3)-(+17/7) (2)(-2)-(+2/3) (3)|(-7.2)-(-6.3)+(1.1)| (4)|(-5/4)-(-3/4)|-|1-5/4-|-3/4|)
(浜)濡傛灉|a|=4,|b|=2,涓攟a+b|=a+b,姹俛-b镄勫.
(涓)鑻a,b涓烘湁鐞嗘暟,涓攟a|<|b|璇曟瘆杈亿a-b|鍜寍a|-|b|镄勫ぇ灏
(锲)濡傛灉|X-1|=4,姹俋,骞跺湪鏁拌酱涓婅傚疗琛ㄧず鏁疖镄勭偣涓庤〃绀1镄勭偣镄勮窛绂.
缁冧範涓(A绾)
(涓)阃夋嫨棰:
(1)寮忓瓙-40-28+19-24+32镄勬ｇ‘璇绘硶鏄( ) (A)璐40,璐28,锷19,鍑24涓32镄勫拰 (B)璐40鍑忚礋28锷19鍑忚礋24锷32 (C)璐40鍑28锷19鍑24锷32 (D)璐40璐28锷19鍑24鍑忚礋32 (2)鑻ユ湁鐞嗘暟a+b+C<0,鍒( ) (A)涓変釜鏁颁腑链灏戞湁涓や釜鏄璐熸暟 (B)涓変釜鏁颁腑链変笖鍙链変竴涓璐熸暟 (C)涓変釜鏁颁腑链灏戞湁涓涓鏄璐熸暟 (D)涓変釜鏁颁腑链変袱涓鏄姝ｆ暟鎴栬呮湁涓や釜鏄璐熸暟 (3)鑻m<0,鍒檓鍜屽畠镄勭浉鍙嶆暟镄勫樊镄勭粷瀵瑰兼槸( ) (A)0 (B)m (C)2m (D)-2m (4)涓嫔垪钖勫纺涓涓岭-y-Z璇夊间笉鐩哥瓑镄勬槸( ) (A)X-(Y-Z) (B)X-(Y+Z) (C)(X-y)+(-z) (D)(-y)+(X-Z)
(浜)濉绌洪:
(1)链夌悊鏁扮殑锷犲噺娣峰悎杩愮畻镄勪竴鑸姝ラゆ槸:(1)________;(2)_________;(3)________ _______;(4)__________________. (2)褰揵0,(a+b)(a-1)>0,鍒椤繀链( ) (A)b涓巃钖屽彿 (B)a+b涓巃-1钖屽彿 (C)a>1 (D)b1 (6)涓涓链夌悊鏁板拰瀹幂殑鐩稿弽鏁扮殑绉( ) (A)绗﹀彿蹇呬负姝 (B)绗﹀彿蹇呬负璐 (C)涓涓嶅皬浜庨浂 (D)涓瀹氢笉澶т簬闆 (7)鑻|a-1|*|b+1|=0,鍒檃,b镄勫( ) (A)a=1,b涓嶅彲鑳戒负-1 (B)b=-1,a涓嶅彲鑳戒负1 (C)a=1鎴朾=1 (D)a涓巄镄勫肩浉绛 (8)鑻a*B*C=0,鍒栾繖涓変釜链夌悊鏁颁腑( ) (A)镊冲皯链変竴涓涓洪浂 (B)涓変釜閮芥槸闆 (C)鍙链変竴涓涓洪浂 (D)涓嶅彲鑳芥湁涓や釜浠ヤ笂涓洪浂
(浜)濉绌洪:
(1)链夌悊鏁颁箻娉曟硶鍒欐槸:涓ゆ暟鐩镐箻,钖屽彿__________,寮傚彿_______________,骞舵妸缁濆瑰糭____, 浠讳綍鏁板悓闆剁浉涔橀兘寰梍_________________. (2)鑻ュ洓涓链夌悊鏁瘾,b,c,d涔嬬Н鏄姝ｆ暟,鍒檃,b,c,d涓璐熸暟镄勪釜鏁板彲鑳芥槸______________; (3)璁＄畻(-2/199)*(-7/6-3/2+8/3)=________________; (4)璁＄畻:(4a)*(-3b)*(5c)*1/6=__________________; (5)璁＄畻:(-8)*(1/2-1/4+2)=-4-2+16=10镄勯敊璇鏄痏__________________; (6)璁＄畻:(-1/6)*(-6)*(10/7)*(-7/10)=[(-1/6)*(-6)][(+10/7)*(-7/10)]=-1镄勬牴鎹鏄痏______
(涓)鍒ゆ柇棰:
(1)涓ゆ暟涔嬬Н涓烘,闾ｄ箞杩欎袱鏁颁竴瀹氶兘鏄姝ｆ暟; (2)涓ゆ暟涔嬬Н涓鸿礋,闾ｄ箞杩欎袱涓鏁板纾鍙; (3)鍑犱釜链夌悊鏁扮浉涔,褰揿洜鏁版湁锅舵暟涓镞,绉涓烘; (4)鍑犱釜链夌悊鏁扮浉涔,褰撶Н涓鸿礋鏁版椂,璐熷洜鏁版湁濂囨暟涓; (5)绉姣旀疮涓锲犳暟閮藉ぇ.
缁冧範(锲)(B绾)
(涓)璁＄畻棰:
(1)(-4)(+6)(-7) (2)(-27)(-25)(-3)(-4) (3)0.001*(-0.1)*(1.1) (4)24*(-5/4)*(-12/15)*(-0.12) (5)(-3/2)(-4/3)(-5/4)(-6/5)(-7/6)(-8/7) (6)(-24/7)(11/8+7/3-3.75)*24
(浜)鐢ㄧ亩渚挎柟娉曡＄畻:
(1)(-71/8)*(-23)-23*(-73/8) (2)(-7/15)*(-18)*(-45/14) (3)(-2.2)*(+1.5)*(-7/11)*(-2/7) (涓)褰揳=-4,b=-3,c=-2,d=-1镞,姹备唬鏁板纺(ab+cd)(ab-cd)镄勫.
(锲)宸茬煡1+2+3+......+31+32+33=17*33,璁＄畻涓嫔纺
1-3+2-6+3-9-12+...+31-93+32-96+33-99镄勫
缁冧範浜(A绾)
(涓)阃夋嫨棰:
(1)宸茬煡a,b鏄涓や釜链夌悊鏁,濡傛灉瀹冧滑镄勫晢a/b=0,闾ｄ箞( ) (A)a=0涓攂铌0 (B)a=0 (C)a=0鎴朾=0 (D)a=0鎴朾铌0 (2)涓嫔垪缁椤畾锲涚粍鏁1鍜1;-1鍜-1;0鍜0;-2/3鍜-3/2,鍏朵腑浜掍负鍊掓暟镄勬槸( ) (A)鍙链 (B)鍙链 (C)鍙链 (D)閮芥槸 (3)濡傛灉a/|b|(b铌0)鏄姝ｆ暣鏁,鍒( ) (A)|b|鏄痑镄勭害鏁 (B)|b|鏄痑镄勫嶆暟 (C)a涓巄钖屽彿 (D)a涓巄寮傚彿 (4)濡傛灉a>b,闾ｄ箞涓瀹氭湁( ) (A)a+b>a (B)a-b>a (C)2a>ab (D)a/b>1
(浜)濉绌洪:
(1)褰搢a|/a=1镞,a______________0;褰搢a|/a=-1镞,a______________0;(濉>,0,鍒檃___________0; (11)鑻ab/c0,鍒檅___________0; (12)鑻a/b>0,b/c(-0.3)4>-106 (B)(-0.3)4>-106>(-0.2)3 (C)-106>(-0.2)3>(-0.3)4 (D)(-0.3)4>(-0.2)3>-106 (4)鑻a涓烘湁鐞嗘暟,涓攁2>a,鍒檃镄勫彇鍊艰寖锲存槸( ) (A)a<0 (B)0<1 (C)a1 (D)a>1鎴朼<0 (5)涓嬮溃鐢ㄧ戝﹁版暟娉曡〃绀106000,鍏朵腑姝ｇ‘镄勬槸( ) (A)1.06*105 (B)10.6*105 (C)1.06*106 (D)0.106*107 (6)宸茬煡1.2363=1.888,鍒123.63绛変簬( ) (A)1888 (B)18880 (C)188800 (D)1888000 (7)鑻a鏄链夌悊鏁,涓嫔垪钖勫纺镐昏兘鎴愮珛镄勬槸( ) (A)(-a)4=a4 (B)(-a)3=A4 (C)-a4=(-a)4 (D)-a3=a3 (8)璁＄畻:(-1)1-(-2)2-(-3)3-(-4)4镓寰楃粨鏋沧槸( ) (A)288 (B)-288 (C)-234 (D)280
(浜)濉绌洪:
(1)鍦23涓,3鏄痏_______,2鏄痏______,骞傛槸________;鑻ユ妸3鐪嬩綔骞,鍒椤畠镄勫簳鏁版槸________,
鎸囨暟鏄痏_______; (2)镙规嵁骞傜殑镒忎箟:(-2)3琛ㄧず________鐩镐箻; (-3)2v琛ㄧず________鐩镐箻;-23琛ㄧず________. (3)骞虫柟绛変簬36/49镄勬湁鐞嗘暟鏄痏_______;绔嬫柟绛変簬-27/64镄勬暟鏄痏_______ (4)鎶娄竴涓澶т簬10镄勬ｆ暟璁版垚a*10n(n涓烘ｆ暣鏁)镄勫舰鎴,a镄勮寖锲存槸________,杩欓噷n姣斿师𨱒ョ殑鏁
鏁颁綅鏁板皯_________,杩欑嶈版暟娉旷О涓虹戝﹁版暟娉; (5)鐢ㄧ戝﹁版暟娉曡板嚭涓嬮溃钖勬暟:4000=___________;950000=________________;鍦扮悆
镄勮川閲忕害涓49800...0鍏(28浣),鍙璁颁负________; (6)涓嬮溃鐢ㄧ戝﹁版暟娉曡板嚭镄勬暟,铡熸潵钖勪负澶氩皯 105=_____________;2*105=______________; 9.7*107=______________9.756*103=_____________ (7)涓嫔垪钖勬暟鍒嗗埆鏄鍑犱綅镊铹舵暟 7*106鏄痏_____浣嶆暟 1.1*109鏄痏_______浣嶆暟; 3.78*107鏄痏_____浣嶆暟 1010鏄痏_______浣嶆暟; (8)鑻ユ湁鐞嗘暟m 0,b0 (B)a-|b|>0 (C)a2+b3>0 (D)a<0 (6)浠ｆ暟寮(a+2)2+5鍙栧缑链灏忓兼椂镄刟鍊间负( ) (A)a=0 (B)a=2 (C)a=-2 (D)a0 (B)b-a>0 (C)a,b浜掍负鐩稿弽鏁; (D)-ab (C)a
(5)鐢ㄥ洓鑸崭簲鍏ユ硶寰楀埌镄勮繎浼兼暟1.20镓琛ㄧず镄勫嗳纭鏁瘾镄勮寖锲存槸( )
(A)1.195铌a<1.205 (B)1.15铌a<1.18 (C)1.10铌a<1.30 (D)1.200铌a<1.205 (6)涓嫔垪璇存硶姝ｇ‘镄勬槸( ) (A)杩戜技鏁3.80镄勭簿纭搴︿笌杩戜技鏁38镄勭簿纭搴︾浉钖; (B)杩戜技鏁38.0涓庤繎浼兼暟38镄勬湁鏁堟暟瀛椾釜鏁颁竴镙 (C)3.1416绮剧‘鍒扮栌鍒嗕綅钖,链変笁涓链夋晥鏁板瓧3,1,4; (D)鎶123*102璁版垚1.23*104,鍏舵湁鏁堟暟瀛楁湁锲涗釜.
(浜)濉绌洪:
(1)鍐椤嚭涓嫔垪鐢卞洓鑸崭簲鍏ュ缑鍒扮殑杩戜技鍊兼暟镄勭簿纭搴︿笌链夋晥鏁板瓧: (1)杩戜技鏁85绮剧‘鍒癣_______浣,链夋晥鏁板瓧鏄痏_______; (2)杩戜技鏁3涓囩簿纭鍒癣_____浣,链夋晥鏁板瓧鏄痏_______; (3)杩戜技鏁5200鍗幂簿纭鍒癣_______,链夋晥鏁板瓧鏄痏________; (4)杩戜技鏁0.20绮剧‘鍒癣________浣,链夋晥鏁板瓧鏄痏____________. (2)璁緀=2.71828......,鍙栬繎浼兼暟2.7鏄绮剧‘鍒癣_________浣,链埙______涓链夋晥鏁板瓧;
鍙栬繎浼兼暟2.7183鏄绮剧‘鍒癣________浣,链埙______涓链夋晥鏁板瓧. (3)鐢卞洓鑸崭簲鍏ュ缑鍒跋=3.1416,绮剧‘鍒0.001镄勮繎浼煎兼槸蟺=__________; (4)3.1416淇濈暀涓変釜链夋晥鏁板瓧镄勮繎浼煎兼槸_____________;
(涓)鍒ゆ柇棰:
(1)杩戜技鏁25.0绮剧‘浠ヤ釜䦅,链夋晥鏁板瓧鏄2,5; (2)杩戜技鏁4鍗冨拰杩戜技鏁4000镄勭簿纭绋嫔害涓镙; (3)杩戜技鏁4鍗冨拰杩戜技鏁4*10^3镄勭簿纭绋嫔害涓镙; (4)9.949绮剧‘鍒0.01镄勮繎浼兼暟鏄9.95.
缁冧範鍏(B绾)
(涓)鐢ㄥ洓鑸崭簲鍏ユ硶瀵逛笅鍒楀悇鏁板彇杩戜技鍊(瑕佹眰淇濈暀涓変釜链夋晥鏁板瓧): (1)37.27 (2)810.9 (3)0.0045078 (4)3.079
(浜)鐢ㄥ洓鑸崭簲鍏ユ硶瀵逛笅鍒楀悇鏁板彇杩戜技鍊(瑕佹眰绮剧‘鍒板崈浣): (1)37890.6 (2)213612.4 (3)1906.57
(涓)璁＄畻(缁撴灉淇濈暀涓や釜链夋晥鏁板瓧): (1)3.14*3.42 (2)972*3.14*1/4
缁冧範涔
(涓)镆ヨ〃姹傚:
(1)7.042 (2)2.482 (3)9.52 (4)2.0012 (5)123.42 (6)0.12342 (7)1.283 (8)3.4683 (9)(-0.5398)3 (10)53.733
(浜)宸茬煡2.4682=6.901,涓嶆煡琛ㄦ眰24.682涓0.024682镄勫
(涓)宸茬煡5.2633=145.7,涓嶆煡琛ㄦ眰
(1)0.52633 (2)0.05263 (3)52.632 (4)52633
(锲)宸茬煡21.762^2=473.5,闾ｄ箞0.0021762鏄澶氩皯 淇濈暀涓変釜链夋晥鏁板瓧镄勮繎浼煎兼槸澶氩皯
(浜)镆ヨ〃璁＄畻:鍗婂缎涓77cm镄勭悆镄勮〃闱㈢Н.(鐞幂殑闱㈢Н=4蟺*r2)
链夌悊鏁扮粌涔犻
閴翠簬閮ㄥ垎瀛︽牎鍙鑳戒细涓捐屽叆瀛﹀疄楠岀彮镄勯夋嫈钥冭瘯锛屽彲鑳戒细娑夊强鍒板埯涓镄勯儴鍒嗗唴瀹广傛垜浠鐗瑰湴阃夌紪浜呜繖浠界敱鐞嗘暟缁冧範棰桡纴渚涘悓瀛︿滑缁冧範锛岄毦搴﹀彲鑳介珮浜庝竴浜涢夋嫈钥冭瘯镄勯樼洰锛堟湁鐞嗘暟閮ㄥ垎锛夈傝繖浠界粌涔犻树篃鍙浠ヤ綔涓哄埯涓瀛︿範钖庢湁鐞嗘暟钖庝娇鐢ㄣ
涓 濉绌洪
1锛-(- )镄勫掓暟鏄痏________锛岀浉鍙嶆暟鏄痏_________锛岀粷瀵瑰兼槸__________銆
2锛庤嫢|x|+|y|=0锛屽垯x=__________锛寉=__________銆
3锛庤嫢|a|=|b|锛屽垯a涓巄__________銆
4锛庡洜涓哄埌镣2鍜岀偣6璺濈荤浉绛夌殑镣硅〃绀虹殑鏁版槸4锛屾湁杩欐牱镄勫叧绯 锛岄偅涔埚埌镣100鍜屽埌镣999璺濈荤浉绛夌殑鏁版槸_____________锛涘埌镣 璺濈荤浉绛夌殑镣硅〃绀虹殑鏁版槸____________锛涘埌镣筸鍜岀偣钬搉璺濈荤浉绛夌殑镣硅〃绀虹殑鏁版槸________銆
5锛庤＄畻锛 =_________銆
6锛庡凡鐭 锛屽垯 =_________銆
7.濡傛灉 锛2锛岄偅涔坸锛 .
8锛庡埌镣3璺濈4涓鍗曚綅镄勭偣琛ㄧず镄勬湁鐞嗘暟鏄痏____________銆
9锛巁_______________________锣冨洿鍐呯殑链夌悊鏁扮粡杩囧洓鑸崭簲鍏ュ缑鍒扮殑杩戜技鏁3.142銆
10锛庡皬浜3镄勬ｆ暣鏁版湁_____.
11. 濡傛灉m<0锛宯锛0锛寍m|锛濑n|锛岄偅涔坢+n__________0銆
12锛庝綘鑳藉緢蹇绠楀嚭 钖楋纻
涓轰简瑙ｅ喅杩欎釜闂棰桡纴鎴戜滑钥冨疗涓浣崭笂镄勬暟涓5镄勬ｆ暣鏁扮殑骞虫柟锛屼换镒忎竴涓涓浣嶆暟涓5镄勬ｆ暣鏁板彲鍐欐垚10n锛5锛坣涓烘ｆ暣鏁帮级锛屽嵆姹 镄勫硷纴璇曞垎鏋 锛2锛3钬︹﹁繖浜涚亩鍗曟儏褰锛屼粠涓鎺㈢储鍏惰勫緥銆
鈶撮氲繃璁＄畻锛屾帰绱㈣勫緥:
鍙鍐欐垚 锛
鍙鍐欐垚 锛
鍙鍐欐垚 锛
鍙鍐欐垚 锛
钬︹︹︹︹︹
鍙鍐欐垚________________________________
鍙鍐欐垚________________________________
鈶垫牴鎹浠ヤ笂瑙勫緥锛岃瘯璁＄畻 =
13锛庤傚疗涓嬮溃涓鍒楁暟锛屾牴鎹瑙勫緥鍐椤嚭妯绾夸笂镄勬暟锛
锛 锛 锛涳紞 锛 锛 锛 锛涒︹︼绂绗2003涓鏁版槸 銆
14锛 鎶娄笅鍒楀悇鏁板～鍦ㄧ浉搴旂殑闆嗗悎鍐呫
鏁存暟闆嗗悎锛氾经 钬︹︼綕
璐熸暟闆嗗悎锛氾经 钬︹︼綕
鍒嗘暟闆嗗悎锛氾经 钬︹︼綕
闱炶礋鏁伴泦钖堬细锝 钬︹︼綕
姝ｆ湁鐞嗘暟闆嗗悎锛氾经 钬︹︼綕
璐熷垎鏁伴泦钖堬细锝 钬︹︼綕
浜 阃夋嫨棰
15锛庯纸1锛変笅鍒楄存硶姝ｇ‘镄勬槸锛 锛
锛圆锛夌粷瀵瑰艰缉澶х殑鏁拌缉澶э绂
锛圔锛夌粷瀵瑰艰缉澶х殑鏁拌缉灏忥绂
锛圕锛夌粷瀵瑰肩浉绛夌殑涓ゆ暟鐩哥瓑锛
锛图锛夌浉绛変袱鏁扮殑缁濆瑰肩浉绛夈
16锛 宸茬煡a<c<0,b>0,涓攟a|>|b|>|c|,鍒檤a|+|b|-|c|+|a+b|+|b+c|+|a+c|绛変簬锛 锛
A.-3a+b+c B.3a+3b+c C.a-b+2c D.-a+3b-3c
17.涓嫔垪缁撹烘ｇ‘镄勬槸锛 锛
A. 杩戜技鏁1.230鍜1.23镄勬湁鏁堟暟瀛椾竴镙
B. 杩戜技鏁79.0鏄绮剧‘鍒颁釜浣岖殑鏁帮纴瀹幂殑链夋晥鏁板瓧鏄7銆9
C. 杩戜技鏁3.0324链5涓链夋晥鏁板瓧
D. 杩戜技鏁5鍗冧笌杩戜技鏁5000镄勭簿纭搴︾浉钖
18锛庝袱涓链夌悊鏁扮浉锷狅纴濡傛灉鍜屾瘆鍏朵腑浠讳綍锷犳暟閮藉皬锛岄偅涔堣繖涓や釜锷犳暟锛 锛
锛圆锛夐兘鏄姝ｆ暟 锛圔锛夐兘鏄璐熸暟 锛圕锛変簰涓虹浉鍙嶆暟 锛图锛夊纾鍙
19. 濡傛灉链夌悊鏁 锛 锛
A. 褰
B.
C.
D. 浠ヤ笂璇存硶閮戒笉瀵
20锛庝袱涓闱为浂链夌悊鏁扮殑鍜屼负姝ｆ暟锛岄偅涔堣繖涓や釜链夌悊鏁颁负锛 锛
锛圆锛夐兘鏄姝ｆ暟 锛圔锛夎呖灏戞湁涓涓涓烘ｆ暟
锛圕锛夋ｆ暟澶т簬璐熸暟 锛图锛夋ｆ暟澶т簬璐熸暟镄勭粷瀵瑰硷纴鎴栭兘涓烘ｆ暟銆
涓夎＄畻棰
21. 姹备笅闱㈠悇寮忕殑鍊(-48)梅6-(-25)脳(-4)
锛2锛5.6+[0.9+4.4-(-8.1)]锛
锛3锛120脳( )锛
锛4锛
22. 镆愬崟浣崭竴鏄熸湡鍐呮敹鍏ュ拰鏀鍑烘儏鍐靛备笅锛+853.5鍏冿纴+237.2鍏冿纴-325鍏冿纴+138.5鍏冿纴-280鍏冿纴-520鍏冿纴+103鍏冿纴闾ｄ箞锛岃繖涓鏄熸湡鍐呰ュ崟浣嶆槸鐩堜綑杩樻槸浜忔崯锛熺泩浣欐垨浜忔崯澶氩皯鍏冿纻
鎻愮ず锛氭湰棰树腑姝ｆ暟琛ㄧず鏀跺叆锛岃礋鏁拌〃绀烘敮鍑猴纴灏嗕竷澶╃殑鏀跺叆鎴栨敮鍑烘暟鐩稿姞钖庯纴鍜屼负姝ｆ暟琛ㄧず鐩堜綑锛屽拰涓鸿礋鏁拌〃绀轰簭鎹熴
23. 镆愬湴涓锻ㄥ唴姣忓ぉ镄勬渶楂樻皵娓╀笌链浣庢皵娓╄板綍濡备笅琛锛屽摢澶╃殑娓╁樊链澶у摢澶╃殑娓╁樊链灏忥纻
鏄熸湡 涓 浜 涓 锲 浜 鍏 涓
链楂樻皵娓 10ºC 11ºC 12ºC 9ºC 8ºC 9ºC 8ºC
链浣庢皵娓 2ºC 0ºC 1ºC -1ºC -2ºC -3ºC -1ºC
24銆佹ｅ纺鎺掔悆姣旇禌锛屽规墍浣跨敤镄勬帓鐞幂殑閲嶉噺鏄链変弗镙艰勫畾镄勚傛镆5涓鎺掔悆镄勯吨閲忥纴瓒呰繃瑙勫畾閲嶉噺镄勫厠鏁拌颁綔姝ｆ暟锛屼笉瓒宠勫畾閲嶉噺镄勫厠鏁拌颁綔璐熸暟锛屾镆ョ粨鏋滃备笅琛锛
+15 -10 +30 -20 -40
鎸囧嚭鍝涓鎺掔悆镄勮川閲忓ソ涓浜涳纸鍗抽吨閲忔渶鎺ヨ繎瑙勫畾閲嶉噺锛夛纻浣犳庢牱鐢ㄥ﹁繃镄勭粷瀵瑰肩煡璇嗘潵璇存槑杩欎釜闂棰桡纻
25. 宸茬煡 ; ;
锛1锛夌寽𨱍冲～绌猴细
锛2锛夎＄畻鈶
鈶23+43+63+983+钬︹+1003
26锛庢帰绱㈣勫緥灏呜繛缁镄勫伓2锛4锛6锛8锛屸︼纴鎺掓垚濡备笅琛锛
2 4 6 8 10
12 14 16 18 20
22 24 26 28 30
32 34 36 38 40
钬 钬
锛1锛 鍗佸瓧妗嗕腑镄勪簲涓鏁扮殑鍜屼笌涓闂寸殑鏁板拰16链変粈涔埚叧绯伙纻
锛2锛 璁句腑闂寸殑鏁颁负x 锛岀敤浠ｆ暟寮忚〃绀哄崄瀛楁嗕腑镄勪簲涓鏁扮殑鍜.
锛3锛 鑻ュ皢鍗佸瓧妗嗕笂涓嫔乏鍙崇Щ锷锛屽彲妗嗕綇鍙﹀栫殑浜斾綅鏁帮纴鍏跺畠浜斾綅鏁扮殑鍜岃兘绛変簬201钖楋纻濡傝兘锛屽啓鍑鸿繖浜斾綅鏁帮纴濡备笉鑳斤纴璇存槑鐞嗙敱銆
27锛庤绱=ax5+bx3+cx-5,鍏朵腑a,b,c,涓哄父鏁帮纴宸茬煡褰搙= -5镞讹纴y=7,姹傚綋x=5镞讹纴姹倅镄勫笺
链夌悊鏁扮粌涔犻桦弬钥幂瓟妗
涓 濉绌洪
1锛 4, - , .鎻愮ず锛氶樿槠绠鍗曪纴浣呜繖绫绘傚康棰桦湪涓冨勾绾х殑钥冭瘯涓鍑犱箮蹇呰冦
2锛 0锛0锛庢彁绀猴细|x|铌0,|y|铌0.鈭磝=0,y=0.
3锛庣浉绛夋垨钥呬簰涓虹浉鍙嶆暟銆傛彁绀猴细浜掍负鐩稿弽鏁扮殑缁濆瑰肩浉绛 銆
4锛 549.5, , .鎻愮ず:鍒版暟杞翠笂涓ょ偣鐩哥瓑镄勬暟镄勪腑镣圭瓑浜庤繖涓ゆ暟鍜岀殑涓鍗.
5锛 0.鎻愮ず锛氭疮鐩搁偦镄勪袱椤圭殑鍜屼负0銆
6锛 -8.鎻愮ず锛 ,4+a=0,a-2b=0,瑙ｅ缑:a= -4,b= -2. = -8.
7. x-3=卤2銆倄=3卤2,x=5鎴杧=1.
8锛 -1鎴7銆傛彁绀猴细镣3璺濈4涓鍗曚綅镄勭偣琛ㄧず镄勬湁鐞嗘暟鏄3卤4銆
9锛 3.1415-3.1424锛庢彁绀猴细鎸夌収锲涜垗浜斿叆镄勮勫垯銆
10锛1,2.鎻愮ず锛氩ぇ浜庨浂镄勬暣鏁扮О涓烘ｆ暣鏁般
11. <0.鎻愮ず锛氭湁鐞嗘暟镄勫姞娉旷殑绗﹀彿鍙栧喅浜庣粷瀵瑰煎ぇ镄勬暟銆
12锛 =5625=100脳5脳(5+1)+25; =7225=100脳8脳(8+1)+25;
=100脳10脳(10+1)+25=11025.
13锛 , , .鎻愮ず:杩欎竴鍒楁暟镄勭琻椤瑰彲琛ㄧず涓(-1)n .
14锛 鎻愮ず锛氾纸1锛夐泦钖堟槸鎸囧叿链夋煇涓鐗瑰緛镄勪竴绫讳簨鐗╃殑鍏ㄤ綋锛屾敞镒忎笉瑕佹纺鎺夋暟0锛岄樼洰涓鍙鏄鍏蜂綋镄勫嚑涓绗﹀悎𨱒′欢镄勬暟锛屽彧鏄涓閮ㄥ垎锛屾墍浠ラ氩父瑕佸姞鐪佺暐鍙枫
锛2锛夐潪璐熸暟琛ㄧず涓嶆槸璐熸暟镄勬墍链夋湁鐞嗘暟锛屽簲涓烘ｆ暟鍜岄浂锛岄偅涔堥潪姝ｆ暟琛ㄧず浠涔埚憿锛燂纸绛旓细璐熸暟鍜岄浂锛
绛旀堬细鏁存暟闆嗗悎锛氾经 钬︹︼綕
璐熸暟闆嗗悎锛氾经 钬︹︼綕
鍒嗘暟闆嗗悎锛氾经 钬︹︼綕
闱炶礋鏁伴泦钖堬细锝 钬︹︼綕
姝ｆ湁鐞嗘暟闆嗗悎锛氾经 钬︹︼綕
璐熷垎鏁伴泦钖堬细锝 钬︹︼綕
浜 阃夋嫨棰
15锛 D.鎻愮ず锛氩逛簬涓や釜璐熸暟𨱒ヨ达纴缁濆瑰煎皬镄勬暟鍙嶈屽ぇ锛屾墍浠A阌栾銆傚逛簬涓や釜姝ｆ暟𨱒ヨ达纴缁濆瑰煎ぇ镄勬暟澶э纴镓浠B阌栾銆备簰涓虹浉鍙嶆暟镄勪袱涓鏁扮殑缁濆瑰肩浉绛夈
16锛峣.鎻愮ず锛-a+b-(-c)-(a+b)+(b+c)-(a+c)= -3a+b+c
17. C.鎻愮ず锛氭湁鏁堟暟瀛楃殑瀹氢箟鏄浠庡乏杈圭涓浣崭笉涓洪浂镄勬暟瀛楄捣锛屽埌鍙宠竟链钖庝竴涓鏁板瓧缁撴潫銆18锛嶣
19.C 鎻愮ず锛氩綋n涓哄囨暟镞, , <0. 褰搉涓哄伓鏁版椂锛 , <0.镓浠n涓轰换镒忚嚜铹舵暟镞讹纴镐绘湁 <0鎴愮珛.
20锛 D.鎻愮ず锛氢袱涓链夌悊鏁版兂锷狅纴镓寰楁暟镄勭﹀彿鐢辩粷瀵瑰煎ぇ镄勬暟瑙夊缑鍐冲畾銆
涓夎＄畻棰
21. 姹备笅闱㈠悇寮忕殑鍊
锛1锛-108
锛2锛19 .鎻愮ず锛氩厛铡绘嫭鍙凤纴钖庤＄畻銆
锛3锛-111 .鎻愮ず: 120脳( )
120脳( )
=120脳(- )+120脳 -120脳
= -111
锛4锛 .鎻愮ず;
=1- +
=
22. 鎻愮ず锛氭湰棰树腑姝ｆ暟琛ㄧず鏀跺叆锛岃礋鏁拌〃绀烘敮鍑猴纴灏嗕竷澶╃殑鏀跺叆鎴栨敮鍑烘暟鐩稿姞钖庯纴鍜屼负姝ｆ暟琛ㄧず鐩堜綑锛屽拰涓鸿礋鏁拌〃绀轰簭鎹熴
瑙ｏ细锛+853.5锛+锛+237.2锛+锛-325锛+锛+138.5锛+锛-520锛+锛-280锛+锛+103锛
锛漑锛+853.5锛+锛+237.2锛+锛+138.5锛+锛+103锛坞+[锛-325锛+锛-520锛+锛-280锛坞
锛濓纸+1332.2锛+锛-1125锛
锛+207.2
鏁呮湰鏄熸湡鍐呰ュ崟浣岖泩浣欙纴鐩堜綑207.2鍏冦
23. 鎻愮ず锛氭眰娓╁樊鍒╃敤鍑忔硶锛屽嵆链楂樻俯搴︾殑宸锛屽啀姣旇缉瀹冧滑镄勫ぇ灏忋
瑙ｏ细锻ㄤ竴娓╁樊锛10-2锛8锛ºC锛
锻ㄤ簩娓╁樊锛11-0锛11锛ºC锛
锻ㄤ笁娓╁樊锛12-1锛11锛ºC锛
锻ㄥ洓娓╁樊锛9-锛-1锛夛绅10锛ºC锛
锻ㄤ簲娓╁樊锛8-锛-2锛夛绅10锛ºC锛
锻ㄥ叚娓╁樊锛9-锛-3锛夛绅12锛ºC锛
锻ㄦ棩娓╁樊锛8-锛-1锛夛绅9锛ºC锛
镓浠ュ懆鍏娓╁樊链澶э纴锻ㄤ竴娓╁樊链灏忋
24銆
瑙ｏ细绗浜屽彧鎺掔悆璐ㄩ噺濂戒竴浜涳纴鍒╃敤杩欎簺鏁版嵁镄勭粷瀵瑰肩殑澶у皬𨱒ュ垽鏂鎺掔悆镄勮川閲忥纴缁濆瑰艰秺灏忚存槑瓒婃帴杩戣勫畾閲嶉噺锛屽洜姝よ川閲忎篃灏卞ソ涓浜涖
25.
锛1锛 锛2锛夆憼25502500锛涙彁绀猴细铡熷纺=
鈶″师寮=
=23脳13+23脳23+23脳33+23脳43+23脳53+钬︹+23脳503
=23(13+23+33+43+53+钬︹+503)
=8脳
=13005000
26锛
(1) 鍗佸瓧妗嗕腑镄勪簲涓鏁扮殑鍜岀瓑浜庝腑闂寸殑5鍊嶃
(2) 5x
(3) 涓嶈兘锛屽亣璁5x=201.x=40.2.涓嶆槸鏁存暟.镓浠ヤ笉瀛桦湪杩欎箞涓涓獂.
27锛巠=ax5+bx3+cx-5,y+5= ax5+bx3+cx,褰搙=-5镞讹纴y+5=12.
-(y+5)=-ax5-bx3-cx=a(-x)5+b(-x)3+c(-x)
鈭村綋x=5镞讹纴a(-5)5+b(-5)3+c(-5)锛濓紞12锛
a(-5)5+b(-5)3+c(-5)-5= -17