㈠ 甯鎴戝仛寮犳暟瀛﹁瘯鍗,瑕佹眰鍒濅竴涓婂唽鍓嶄笁鍗曞厓鍐,婊″垎120 鎬!!!!!!!! 楂樺垎鎮璧
鏈夌悊鏁扮粌涔
緇冧範涓(B綰)
(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畝渚挎柟娉曡＄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,
奼:(-X)+(-Y)+Z鐨勫
(鍥)鐢">","0,鍒檃-ba (C)鑻ba (D)鑻a<0,ba
(浜)濉絀洪:
(1)闆跺噺鍘籥鐨勭浉鍙嶆暟,鍏剁粨鏋滄槸_____________; (2)鑻a-b>a,鍒檅鏄痏____________鏁; (3)浠-3.14涓鍑忓幓-蟺,鍏跺樊搴斾負____________; (4)琚鍑忔暟鏄-12(4/5),宸鏄4.2,鍒欏噺鏁板簲鏄痏____________; (5)鑻b-a<-,鍒檃,b鐨勫叧緋繪槸___________,鑻a-b<0,鍒檃,b鐨勫叧緋繪槸______________; (6)(+22/3)-( )=-7
(涓)鍒ゆ柇棰:
(1)涓涓鏁板噺鍘諱竴涓璐熸暟,宸姣旇鍑忔暟灝. (2)涓涓鏁板噺鍘諱竴涓姝ｆ暟,宸姣旇鍑忔暟灝. (3)0鍑忓幓浠諱綍鏁,鎵寰楃殑宸鎬葷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
緇冧範浜(B綰)
(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,奼俛-b鐨勫.
(涓)鑻a,b涓烘湁鐞嗘暟,涓攟a|<|b|璇曟瘮杈億a-b|鍜寍a|-|b|鐨勫ぇ灝
(鍥)濡傛灉|X-1|=4,奼俋,騫跺湪鏁拌醬涓婅傚療琛ㄧず鏁癤鐨勭偣涓庤〃紺1鐨勭偣鐨勮窛紱.
緇冧範涓(A綰)
(涓)閫夋嫨棰:
(1)寮忓瓙-40-28+19-24+32鐨勬ｇ『璇繪硶鏄( ) (A)璐40,璐28,鍔19,鍑24涓32鐨勫拰 (B)璐40鍑忚礋28鍔19鍑忚礋24鍔32 (C)璐40鍑28鍔19鍑24鍔32 (D)璐40璐28鍔19鍑24鍑忚礋32 (2)鑻ユ湁鐞嗘暟a+b+C<0,鍒( ) (A)涓変釜鏁頒腑鏈灝戞湁涓や釜鏄璐熸暟 (B)涓変釜鏁頒腑鏈変笖鍙鏈変竴涓璐熸暟 (C)涓変釜鏁頒腑鏈灝戞湁涓涓鏄璐熸暟 (D)涓変釜鏁頒腑鏈変袱涓鏄姝ｆ暟鎴栬呮湁涓や釜鏄璐熸暟 (3)鑻m<0,鍒檓鍜屽畠鐨勭浉鍙嶆暟鐨勫樊鐨勭粷瀵瑰兼槸( ) (A)0 (B)m (C)2m (D)-2m (4)涓嬪垪鍚勫紡涓涓嶺-y-Z璇夊間笉鐩哥瓑鐨勬槸( ) (A)X-(Y-Z) (B)X-(Y+Z) (C)(X-y)+(-z) (D)(-y)+(X-Z)
(浜)濉絀洪:
(1)鏈夌悊鏁扮殑鍔犲噺娣峰悎榪愮畻鐨勪竴鑸姝ラゆ槸:(1)________;(2)_________;(3)________ _______;(4)__________________. (2)褰揵0,(a+b)(a-1)>0,鍒欏繀鏈( ) (A)b涓巃鍚屽彿 (B)a+b涓巃-1鍚屽彿 (C)a>1 (D)b1 (6)涓涓鏈夌悊鏁板拰瀹冪殑鐩稿弽鏁扮殑縐( ) (A)絎﹀彿蹇呬負姝 (B)絎﹀彿蹇呬負璐 (C)涓涓嶅皬浜庨浂 (D)涓瀹氫笉澶т簬闆 (7)鑻|a-1|*|b+1|=0,鍒檃,b鐨勫( ) (A)a=1,b涓嶅彲鑳戒負-1 (B)b=-1,a涓嶅彲鑳戒負1 (C)a=1鎴朾=1 (D)a涓巄鐨勫肩浉絳 (8)鑻a*B*C=0,鍒欒繖涓変釜鏈夌悊鏁頒腑( ) (A)鑷沖皯鏈変竴涓涓洪浂 (B)涓変釜閮芥槸闆 (C)鍙鏈変竴涓涓洪浂 (D)涓嶅彲鑳芥湁涓や釜浠ヤ笂涓洪浂
(浜)濉絀洪:
(1)鏈夌悊鏁頒箻娉曟硶鍒欐槸:涓ゆ暟鐩鎬箻,鍚屽彿__________,寮傚彿_______________,騫舵妸緇濆瑰糭____, 浠諱綍鏁板悓闆剁浉涔橀兘寰梍_________________. (2)鑻ュ洓涓鏈夌悊鏁癮,b,c,d涔嬬Н鏄姝ｆ暟,鍒檃,b,c,d涓璐熸暟鐨勪釜鏁板彲鑳芥槸______________; (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鐨勯敊璇鏄痏__________________; (6)璁＄畻:(-1/6)*(-6)*(10/7)*(-7/10)=[(-1/6)*(-6)][(+10/7)*(-7/10)]=-1鐨勬牴鎹鏄痏______
(涓)鍒ゆ柇棰:
(1)涓ゆ暟涔嬬Н涓烘,閭ｄ箞榪欎袱鏁頒竴瀹氶兘鏄姝ｆ暟; (2)涓ゆ暟涔嬬Н涓鴻礋,閭ｄ箞榪欎袱涓鏁板紓鍙; (3)鍑犱釜鏈夌悊鏁扮浉涔,褰撳洜鏁版湁鍋舵暟涓鏃,縐涓烘; (4)鍑犱釜鏈夌悊鏁扮浉涔,褰撶Н涓鴻礋鏁版椂,璐熷洜鏁版湁濂囨暟涓; (5)縐姣旀瘡涓鍥犳暟閮藉ぇ.
緇冧範(鍥)(B綰)
(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畝渚挎柟娉曡＄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鏃,奼備唬鏁板紡(ab+cd)(ab-cd)鐨勫.
(鍥)宸茬煡1+2+3+......+31+32+33=17*33,璁＄畻涓嬪紡
1-3+2-6+3-9-12+...+31-93+32-96+33-99鐨勫
緇冧範浜(A綰)
(涓)閫夋嫨棰:
(1)宸茬煡a,b鏄涓や釜鏈夌悊鏁,濡傛灉瀹冧滑鐨勫晢a/b=0,閭ｄ箞( ) (A)a=0涓攂鈮0 (B)a=0 (C)a=0鎴朾=0 (D)a=0鎴朾鈮0 (2)涓嬪垪緇欏畾鍥涚粍鏁1鍜1;-1鍜-1;0鍜0;-2/3鍜-3/2,鍏朵腑浜掍負鍊掓暟鐨勬槸( ) (A)鍙鏈 (B)鍙鏈 (C)鍙鏈 (D)閮芥槸 (3)濡傛灉a/|b|(b鈮0)鏄姝ｆ暣鏁,鍒( ) (A)|b|鏄痑鐨勭害鏁 (B)|b|鏄痑鐨勫嶆暟 (C)a涓巄鍚屽彿 (D)a涓巄寮傚彿 (4)濡傛灉a>b,閭ｄ箞涓瀹氭湁( ) (A)a+b>a (B)a-b>a (C)2a>ab (D)a/b>1
(浜)濉絀洪:
(1)褰搢a|/a=1鏃,a______________0;褰搢a|/a=-1鏃,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,鍒檃鐨勫彇鍊艱寖鍥存槸( ) (A)a<0 (B)0<1 (C)a1 (D)a>1鎴朼<0 (5)涓嬮潰鐢ㄧ戝﹁版暟娉曡〃紺106000,鍏朵腑姝ｇ『鐨勬槸( ) (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絳変簬( ) (A)1888 (B)18880 (C)188800 (D)1888000 (7)鑻a鏄鏈夌悊鏁,涓嬪垪鍚勫紡鎬昏兘鎴愮珛鐨勬槸( ) (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鎵寰楃粨鏋滄槸( ) (A)288 (B)-288 (C)-234 (D)280
(浜)濉絀洪:
(1)鍦23涓,3鏄痏_______,2鏄痏______,騫傛槸________;鑻ユ妸3鐪嬩綔騫,鍒欏畠鐨勫簳鏁版槸________,
鎸囨暟鏄痏_______; (2)鏍規嵁騫傜殑鎰忎箟:(-2)3琛ㄧず________鐩鎬箻; (-3)2v琛ㄧず________鐩鎬箻;-23琛ㄧず________. (3)騫蟲柟絳変簬36/49鐨勬湁鐞嗘暟鏄痏_______;絝嬫柟絳変簬-27/64鐨勬暟鏄痏_______ (4)鎶婁竴涓澶т簬10鐨勬ｆ暟璁版垚a*10n(n涓烘ｆ暣鏁)鐨勫艦鎴,a鐨勮寖鍥存槸________,榪欓噷n姣斿師鏉ョ殑鏁
鏁頒綅鏁板皯_________,榪欑嶈版暟娉曠О涓虹戝﹁版暟娉; (5)鐢ㄧ戝﹁版暟娉曡板嚭涓嬮潰鍚勬暟:4000=___________;950000=________________;鍦扮悆
鐨勮川閲忕害涓49800...0鍏(28浣),鍙璁頒負________; (6)涓嬮潰鐢ㄧ戝﹁版暟娉曡板嚭鐨勬暟,鍘熸潵鍚勪負澶氬皯 105=_____________;2*105=______________; 9.7*107=______________9.756*103=_____________ (7)涓嬪垪鍚勬暟鍒嗗埆鏄鍑犱綅鑷鐒舵暟 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鍙栧緱鏈灝忓兼椂鐨刟鍊間負( ) (A)a=0 (B)a=2 (C)a=-2 (D)a0 (B)b-a>0 (C)a,b浜掍負鐩稿弽鏁; (D)-ab (C)a
(5)鐢ㄥ洓鑸嶄簲鍏ユ硶寰楀埌鐨勮繎浼兼暟1.20鎵琛ㄧず鐨勫噯紜鏁癮鐨勮寖鍥存槸( )
(A)1.195鈮a<1.205 (B)1.15鈮a<1.18 (C)1.10鈮a<1.30 (D)1.200鈮a<1.205 (6)涓嬪垪璇存硶姝ｇ『鐨勬槸( ) (A)榪戜技鏁3.80鐨勭簿紜搴︿笌榪戜技鏁38鐨勭簿紜搴︾浉鍚; (B)榪戜技鏁38.0涓庤繎浼兼暟38鐨勬湁鏁堟暟瀛椾釜鏁頒竴鏍 (C)3.1416綺劇『鍒扮櫨鍒嗕綅鍚,鏈変笁涓鏈夋晥鏁板瓧3,1,4; (D)鎶123*102璁版垚1.23*104,鍏舵湁鏁堟暟瀛楁湁鍥涗釜.
(浜)濉絀洪:
(1)鍐欏嚭涓嬪垪鐢卞洓鑸嶄簲鍏ュ緱鍒扮殑榪戜技鍊兼暟鐨勭簿紜搴︿笌鏈夋晥鏁板瓧: (1)榪戜技鏁85綺劇『鍒癬_______浣,鏈夋晥鏁板瓧鏄痏_______; (2)榪戜技鏁3涓囩簿紜鍒癬_____浣,鏈夋晥鏁板瓧鏄痏_______; (3)榪戜技鏁5200鍗冪簿紜鍒癬_______,鏈夋晥鏁板瓧鏄痏________; (4)榪戜技鏁0.20綺劇『鍒癬________浣,鏈夋晥鏁板瓧鏄痏____________. (2)璁緀=2.71828......,鍙栬繎浼兼暟2.7鏄綺劇『鍒癬_________浣,鏈塤______涓鏈夋晥鏁板瓧;
鍙栬繎浼兼暟2.7183鏄綺劇『鍒癬________浣,鏈塤______涓鏈夋晥鏁板瓧. (3)鐢卞洓鑸嶄簲鍏ュ緱鍒跋=3.1416,綺劇『鍒0.001鐨勮繎浼煎兼槸蟺=__________; (4)3.1416淇濈暀涓変釜鏈夋晥鏁板瓧鐨勮繎浼煎兼槸_____________;
(涓)鍒ゆ柇棰:
(1)榪戜技鏁25.0綺劇『浠ヤ釜鐥,鏈夋晥鏁板瓧鏄2,5; (2)榪戜技鏁4鍗冨拰榪戜技鏁4000鐨勭簿紜紼嬪害涓鏍; (3)榪戜技鏁4鍗冨拰榪戜技鏁4*10^3鐨勭簿紜紼嬪害涓鏍; (4)9.949綺劇『鍒0.01鐨勮繎浼兼暟鏄9.95.
緇冧範鍏(B綰)
(涓)鐢ㄥ洓鑸嶄簲鍏ユ硶瀵逛笅鍒楀悇鏁板彇榪戜技鍊(瑕佹眰淇濈暀涓変釜鏈夋晥鏁板瓧): (1)37.27 (2)810.9 (3)0.0045078 (4)3.079
(浜)鐢ㄥ洓鑸嶄簲鍏ユ硶瀵逛笅鍒楀悇鏁板彇榪戜技鍊(瑕佹眰綺劇『鍒板崈浣): (1)37890.6 (2)213612.4 (3)1906.57
(涓)璁＄畻(緇撴灉淇濈暀涓や釜鏈夋晥鏁板瓧): (1)3.14*3.42 (2)972*3.14*1/4
緇冧範涔
(涓)鏌ヨ〃奼傚:
(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鐨勫
(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
(鍥)宸茬煡21.762^2=473.5,閭ｄ箞0.0021762鏄澶氬皯 淇濈暀涓変釜鏈夋晥鏁板瓧鐨勮繎浼煎兼槸澶氬皯
(浜)鏌ヨ〃璁＄畻:鍗婂緞涓77cm鐨勭悆鐨勮〃闈㈢Н.(鐞冪殑闈㈢Н=4蟺*r2)
鏈夌悊鏁扮粌涔犻
閴翠簬閮ㄥ垎瀛︽牎鍙鑳戒細涓捐屽叆瀛﹀疄楠岀彮鐨勯夋嫈鑰冭瘯錛屽彲鑳戒細娑夊強鍒板垵涓鐨勯儴鍒嗗唴瀹廣傛垜浠鐗瑰湴閫夌紪浜嗚繖浠界敱鐞嗘暟緇冧範棰橈紝渚涘悓瀛︿滑緇冧範錛岄毦搴﹀彲鑳介珮浜庝竴浜涢夋嫈鑰冭瘯鐨勯樼洰錛堟湁鐞嗘暟閮ㄥ垎錛夈傝繖浠界粌涔犻樹篃鍙浠ヤ綔涓哄垵涓瀛︿範鍚庢湁鐞嗘暟鍚庝嬌鐢ㄣ
涓 濉絀洪
1錛-(- )鐨勫掓暟鏄痏________錛岀浉鍙嶆暟鏄痏_________錛岀粷瀵瑰兼槸__________銆
2錛庤嫢|x|+|y|=0錛屽垯x=__________錛寉=__________銆
3錛庤嫢|a|=|b|錛屽垯a涓巄__________銆
4錛庡洜涓哄埌鐐2鍜岀偣6璺濈葷浉絳夌殑鐐硅〃紺虹殑鏁版槸4錛屾湁榪欐牱鐨勫叧緋 錛岄偅涔堝埌鐐100鍜屽埌鐐999璺濈葷浉絳夌殑鏁版槸_____________錛涘埌鐐 璺濈葷浉絳夌殑鐐硅〃紺虹殑鏁版槸____________錛涘埌鐐筸鍜岀偣鈥搉璺濈葷浉絳夌殑鐐硅〃紺虹殑鏁版槸________銆
5錛庤＄畻錛 =_________銆
6錛庡凡鐭 錛屽垯 =_________銆
7.濡傛灉 錛2錛岄偅涔坸錛 .
8錛庡埌鐐3璺濈4涓鍗曚綅鐨勭偣琛ㄧず鐨勬湁鐞嗘暟鏄痏____________銆
9錛巁_______________________鑼冨洿鍐呯殑鏈夌悊鏁扮粡榪囧洓鑸嶄簲鍏ュ緱鍒扮殑榪戜技鏁3.142銆
10錛庡皬浜3鐨勬ｆ暣鏁版湁_____.
11. 濡傛灉m<0錛宯錛0錛寍m|錛瀨n|錛岄偅涔坢+n__________0銆
12錛庝綘鑳藉緢蹇綆楀嚭 鍚楋紵
涓轟簡瑙ｅ喅榪欎釜闂棰橈紝鎴戜滑鑰冨療涓浣嶄笂鐨勬暟涓5鐨勬ｆ暣鏁扮殑騫蟲柟錛屼換鎰忎竴涓涓浣嶆暟涓5鐨勬ｆ暣鏁板彲鍐欐垚10n錛5錛坣涓烘ｆ暣鏁幫級錛屽嵆奼 鐨勫礆紝璇曞垎鏋 錛2錛3鈥︹﹁繖浜涚畝鍗曟儏褰錛屼粠涓鎺㈢儲鍏惰勫緥銆
鈶撮氳繃璁＄畻錛屾帰緔㈣勫緥:
鍙鍐欐垚 錛
鍙鍐欐垚 錛
鍙鍐欐垚 錛
鍙鍐欐垚 錛
鈥︹︹︹︹︹
鍙鍐欐垚________________________________
鍙鍐欐垚________________________________
鈶墊牴鎹浠ヤ笂瑙勫緥錛岃瘯璁＄畻 =
13錛庤傚療涓嬮潰涓鍒楁暟錛屾牴鎹瑙勫緥鍐欏嚭妯綰誇笂鐨勬暟錛
錛 錛 錛涳紞 錛 錛 錛 錛涒︹︼紱絎2003涓鏁版槸 銆
14錛 鎶婁笅鍒楀悇鏁板～鍦ㄧ浉搴旂殑闆嗗悎鍐呫
鏁存暟闆嗗悎錛氾經 鈥︹︼綕
璐熸暟闆嗗悎錛氾經 鈥︹︼綕
鍒嗘暟闆嗗悎錛氾經 鈥︹︼綕
闈炶礋鏁伴泦鍚堬細鍀 鈥︹︼綕
姝ｆ湁鐞嗘暟闆嗗悎錛氾經 鈥︹︼綕
璐熷垎鏁伴泦鍚堬細鍀 鈥︹︼綕
浜 閫夋嫨棰
15錛庯紙1錛変笅鍒楄存硶姝ｇ『鐨勬槸錛 錛
錛圓錛夌粷瀵瑰艱緝澶х殑鏁拌緝澶э紱
錛圔錛夌粷瀵瑰艱緝澶х殑鏁拌緝灝忥紱
錛圕錛夌粷瀵瑰肩浉絳夌殑涓ゆ暟鐩哥瓑錛
錛圖錛夌浉絳変袱鏁扮殑緇濆瑰肩浉絳夈
16錛 宸茬煡a<c<0,b>0,涓攟a|>|b|>|c|,鍒檤a|+|b|-|c|+|a+b|+|b+c|+|a+c|絳変簬錛 錛
A.-3a+b+c B.3a+3b+c C.a-b+2c D.-a+3b-3c
17.涓嬪垪緇撹烘ｇ『鐨勬槸錛 錛
A. 榪戜技鏁1.230鍜1.23鐨勬湁鏁堟暟瀛椾竴鏍
B. 榪戜技鏁79.0鏄綺劇『鍒頒釜浣嶇殑鏁幫紝瀹冪殑鏈夋晥鏁板瓧鏄7銆9
C. 榪戜技鏁3.0324鏈5涓鏈夋晥鏁板瓧
D. 榪戜技鏁5鍗冧笌榪戜技鏁5000鐨勭簿紜搴︾浉鍚
18錛庝袱涓鏈夌悊鏁扮浉鍔狅紝濡傛灉鍜屾瘮鍏朵腑浠諱綍鍔犳暟閮藉皬錛岄偅涔堣繖涓や釜鍔犳暟錛 錛
錛圓錛夐兘鏄姝ｆ暟 錛圔錛夐兘鏄璐熸暟 錛圕錛変簰涓虹浉鍙嶆暟 錛圖錛夊紓鍙
19. 濡傛灉鏈夌悊鏁 錛 錛
A. 褰
B.
C.
D. 浠ヤ笂璇存硶閮戒笉瀵
20錛庝袱涓闈為浂鏈夌悊鏁扮殑鍜屼負姝ｆ暟錛岄偅涔堣繖涓や釜鏈夌悊鏁頒負錛 錛
錛圓錛夐兘鏄姝ｆ暟 錛圔錛夎嚦灝戞湁涓涓涓烘ｆ暟
錛圕錛夋ｆ暟澶т簬璐熸暟 錛圖錛夋ｆ暟澶т簬璐熸暟鐨勭粷瀵瑰礆紝鎴栭兘涓烘ｆ暟銆
涓夎＄畻棰
21. 奼備笅闈㈠悇寮忕殑鍊(-48)梅6-(-25)脳(-4)
錛2錛5.6+[0.9+4.4-(-8.1)]錛
錛3錛120脳( )錛
錛4錛
22. 鏌愬崟浣嶄竴鏄熸湡鍐呮敹鍏ュ拰鏀鍑烘儏鍐靛備笅錛+853.5鍏冿紝+237.2鍏冿紝-325鍏冿紝+138.5鍏冿紝-280鍏冿紝-520鍏冿紝+103鍏冿紝閭ｄ箞錛岃繖涓鏄熸湡鍐呰ュ崟浣嶆槸鐩堜綑榪樻槸浜忔崯錛熺泩浣欐垨浜忔崯澶氬皯鍏冿紵
鎻愮ず錛氭湰棰樹腑姝ｆ暟琛ㄧず鏀跺叆錛岃礋鏁拌〃紺烘敮鍑猴紝灝嗕竷澶╃殑鏀跺叆鎴栨敮鍑烘暟鐩稿姞鍚庯紝鍜屼負姝ｆ暟琛ㄧず鐩堜綑錛屽拰涓鴻礋鏁拌〃紺轟簭鎹熴
23. 鏌愬湴涓鍛ㄥ唴姣忓ぉ鐨勬渶楂樻皵娓╀笌鏈浣庢皵娓╄板綍濡備笅琛錛屽摢澶╃殑娓╁樊鏈澶у摢澶╃殑娓╁樊鏈灝忥紵
鏄熸湡 涓 浜 涓 鍥 浜 鍏 涓
鏈楂樻皵娓 10ºC 11ºC 12ºC 9ºC 8ºC 9ºC 8ºC
鏈浣庢皵娓 2ºC 0ºC 1ºC -1ºC -2ºC -3ºC -1ºC
24銆佹ｅ紡鎺掔悆姣旇禌錛屽規墍浣跨敤鐨勬帓鐞冪殑閲嶉噺鏄鏈変弗鏍艱勫畾鐨勩傛鏌5涓鎺掔悆鐨勯噸閲忥紝瓚呰繃瑙勫畾閲嶉噺鐨勫厠鏁拌頒綔姝ｆ暟錛屼笉瓚寵勫畾閲嶉噺鐨勫厠鏁拌頒綔璐熸暟錛屾鏌ョ粨鏋滃備笅琛錛
+15 -10 +30 -20 -40
鎸囧嚭鍝涓鎺掔悆鐨勮川閲忓ソ涓浜涳紙鍗抽噸閲忔渶鎺ヨ繎瑙勫畾閲嶉噺錛夛紵浣犳庢牱鐢ㄥ﹁繃鐨勭粷瀵瑰肩煡璇嗘潵璇存槑榪欎釜闂棰橈紵
25. 宸茬煡 ; ;
錛1錛夌寽鎯沖～絀猴細
錛2錛夎＄畻鈶
鈶23+43+63+983+鈥︹+1003
26錛庢帰緔㈣勫緥灝嗚繛緇鐨勫伓2錛4錛6錛8錛屸︼紝鎺掓垚濡備笅琛錛
2 4 6 8 10
12 14 16 18 20
22 24 26 28 30
32 34 36 38 40
鈥 鈥
錛1錛 鍗佸瓧妗嗕腑鐨勪簲涓鏁扮殑鍜屼笌涓闂寸殑鏁板拰16鏈変粈涔堝叧緋伙紵
錛2錛 璁句腑闂寸殑鏁頒負x 錛岀敤浠ｆ暟寮忚〃紺哄嶮瀛楁嗕腑鐨勪簲涓鏁扮殑鍜.
錛3錛 鑻ュ皢鍗佸瓧妗嗕笂涓嬪乏鍙崇Щ鍔錛屽彲妗嗕綇鍙﹀栫殑浜斾綅鏁幫紝鍏跺畠浜斾綅鏁扮殑鍜岃兘絳変簬201鍚楋紵濡傝兘錛屽啓鍑鴻繖浜斾綅鏁幫紝濡備笉鑳斤紝璇存槑鐞嗙敱銆
27錛庤緔=ax5+bx3+cx-5,鍏朵腑a,b,c,涓哄父鏁幫紝宸茬煡褰搙= -5鏃訛紝y=7,奼傚綋x=5鏃訛紝奼倅鐨勫箋
鏈夌悊鏁扮粌涔犻樺弬鑰冪瓟妗
涓 濉絀洪
1錛 4, - , .鎻愮ず錛氶樿櫧綆鍗曪紝浣嗚繖綾繪傚康棰樺湪涓冨勾綰х殑鑰冭瘯涓鍑犱箮蹇呰冦
2錛 0錛0錛庢彁紺猴細|x|鈮0,|y|鈮0.鈭磝=0,y=0.
3錛庣浉絳夋垨鑰呬簰涓虹浉鍙嶆暟銆傛彁紺猴細浜掍負鐩稿弽鏁扮殑緇濆瑰肩浉絳 銆
4錛 549.5, , .鎻愮ず:鍒版暟杞翠笂涓ょ偣鐩哥瓑鐨勬暟鐨勪腑鐐圭瓑浜庤繖涓ゆ暟鍜岀殑涓鍗.
5錛 0.鎻愮ず錛氭瘡鐩擱偦鐨勪袱欏圭殑鍜屼負0銆
6錛 -8.鎻愮ず錛 ,4+a=0,a-2b=0,瑙ｅ緱:a= -4,b= -2. = -8.
7. x-3=鹵2銆倄=3鹵2,x=5鎴杧=1.
8錛 -1鎴7銆傛彁紺猴細鐐3璺濈4涓鍗曚綅鐨勭偣琛ㄧず鐨勬湁鐞嗘暟鏄3鹵4銆
9錛 3.1415-3.1424錛庢彁紺猴細鎸夌収鍥涜垗浜斿叆鐨勮勫垯銆
10錛1,2.鎻愮ず錛氬ぇ浜庨浂鐨勬暣鏁扮О涓烘ｆ暣鏁般
11. <0.鎻愮ず錛氭湁鐞嗘暟鐨勫姞娉曠殑絎﹀彿鍙栧喅浜庣粷瀵瑰煎ぇ鐨勬暟銆
12錛 =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錛 , , .鎻愮ず:榪欎竴鍒楁暟鐨勭琻欏瑰彲琛ㄧず涓(-1)n .
14錛 鎻愮ず錛氾紙1錛夐泦鍚堟槸鎸囧叿鏈夋煇涓鐗瑰緛鐨勪竴綾諱簨鐗╃殑鍏ㄤ綋錛屾敞鎰忎笉瑕佹紡鎺夋暟0錛岄樼洰涓鍙鏄鍏蜂綋鐨勫嚑涓絎﹀悎鏉′歡鐨勬暟錛屽彧鏄涓閮ㄥ垎錛屾墍浠ラ氬父瑕佸姞鐪佺暐鍙楓
錛2錛夐潪璐熸暟琛ㄧず涓嶆槸璐熸暟鐨勬墍鏈夋湁鐞嗘暟錛屽簲涓烘ｆ暟鍜岄浂錛岄偅涔堥潪姝ｆ暟琛ㄧず浠涔堝憿錛燂紙絳旓細璐熸暟鍜岄浂錛
絳旀堬細鏁存暟闆嗗悎錛氾經 鈥︹︼綕
璐熸暟闆嗗悎錛氾經 鈥︹︼綕
鍒嗘暟闆嗗悎錛氾經 鈥︹︼綕
闈炶礋鏁伴泦鍚堬細鍀 鈥︹︼綕
姝ｆ湁鐞嗘暟闆嗗悎錛氾經 鈥︹︼綕
璐熷垎鏁伴泦鍚堬細鍀 鈥︹︼綕
浜 閫夋嫨棰
15錛 D.鎻愮ず錛氬逛簬涓や釜璐熸暟鏉ヨ達紝緇濆瑰煎皬鐨勬暟鍙嶈屽ぇ錛屾墍浠A閿欒銆傚逛簬涓や釜姝ｆ暟鏉ヨ達紝緇濆瑰煎ぇ鐨勬暟澶э紝鎵浠B閿欒銆備簰涓虹浉鍙嶆暟鐨勪袱涓鏁扮殑緇濆瑰肩浉絳夈
16錛嶢.鎻愮ず錛-a+b-(-c)-(a+b)+(b+c)-(a+c)= -3a+b+c
17. C.鎻愮ず錛氭湁鏁堟暟瀛楃殑瀹氫箟鏄浠庡乏杈圭涓浣嶄笉涓洪浂鐨勬暟瀛楄搗錛屽埌鍙寵竟鏈鍚庝竴涓鏁板瓧緇撴潫銆18錛嶣
19.C 鎻愮ず錛氬綋n涓哄囨暟鏃, , <0. 褰搉涓哄伓鏁版椂錛 , <0.鎵浠n涓轟換鎰忚嚜鐒舵暟鏃訛紝鎬繪湁 <0鎴愮珛.
20錛 D.鎻愮ず錛氫袱涓鏈夌悊鏁版兂鍔狅紝鎵寰楁暟鐨勭﹀彿鐢辯粷瀵瑰煎ぇ鐨勬暟瑙夊緱鍐沖畾銆
涓夎＄畻棰
21. 奼備笅闈㈠悇寮忕殑鍊
錛1錛-108
錛2錛19 .鎻愮ず錛氬厛鍘繪嫭鍙鳳紝鍚庤＄畻銆
錛3錛-111 .鎻愮ず: 120脳( )
120脳( )
=120脳(- )+120脳 -120脳
= -111
錛4錛 .鎻愮ず;
=1- +
=
22. 鎻愮ず錛氭湰棰樹腑姝ｆ暟琛ㄧず鏀跺叆錛岃礋鏁拌〃紺烘敮鍑猴紝灝嗕竷澶╃殑鏀跺叆鎴栨敮鍑烘暟鐩稿姞鍚庯紝鍜屼負姝ｆ暟琛ㄧず鐩堜綑錛屽拰涓鴻礋鏁拌〃紺轟簭鎹熴
瑙ｏ細錛+853.5錛+錛+237.2錛+錛-325錛+錛+138.5錛+錛-520錛+錛-280錛+錛+103錛
錛漑錛+853.5錛+錛+237.2錛+錛+138.5錛+錛+103錛塢+[錛-325錛+錛-520錛+錛-280錛塢
錛濓紙+1332.2錛+錛-1125錛
錛+207.2
鏁呮湰鏄熸湡鍐呰ュ崟浣嶇泩浣欙紝鐩堜綑207.2鍏冦
23. 鎻愮ず錛氭眰娓╁樊鍒╃敤鍑忔硶錛屽嵆鏈楂樻俯搴︾殑宸錛屽啀姣旇緝瀹冧滑鐨勫ぇ灝忋
瑙ｏ細鍛ㄤ竴娓╁樊錛10-2錛8錛ºC錛
鍛ㄤ簩娓╁樊錛11-0錛11錛ºC錛
鍛ㄤ笁娓╁樊錛12-1錛11錛ºC錛
鍛ㄥ洓娓╁樊錛9-錛-1錛夛紳10錛ºC錛
鍛ㄤ簲娓╁樊錛8-錛-2錛夛紳10錛ºC錛
鍛ㄥ叚娓╁樊錛9-錛-3錛夛紳12錛ºC錛
鍛ㄦ棩娓╁樊錛8-錛-1錛夛紳9錛ºC錛
鎵浠ュ懆鍏娓╁樊鏈澶э紝鍛ㄤ竴娓╁樊鏈灝忋
24銆
瑙ｏ細絎浜屽彧鎺掔悆璐ㄩ噺濂戒竴浜涳紝鍒╃敤榪欎簺鏁版嵁鐨勭粷瀵瑰肩殑澶у皬鏉ュ垽鏂鎺掔悆鐨勮川閲忥紝緇濆瑰艱秺灝忚存槑瓚婃帴榪戣勫畾閲嶉噺錛屽洜姝よ川閲忎篃灝卞ソ涓浜涖
25.
錛1錛 錛2錛夆憼25502500錛涙彁紺猴細鍘熷紡=
鈶″師寮=
=23脳13+23脳23+23脳33+23脳43+23脳53+鈥︹+23脳503
=23(13+23+33+43+53+鈥︹+503)
=8脳
=13005000
26錛
(1) 鍗佸瓧妗嗕腑鐨勪簲涓鏁扮殑鍜岀瓑浜庝腑闂寸殑5鍊嶃
(2) 5x
(3) 涓嶈兘錛屽亣璁5x=201.x=40.2.涓嶆槸鏁存暟.鎵浠ヤ笉瀛樺湪榪欎箞涓涓獂.
27錛巠=ax5+bx3+cx-5,y+5= ax5+bx3+cx,褰搙=-5鏃訛紝y+5=12.
-(y+5)=-ax5-bx3-cx=a(-x)5+b(-x)3+c(-x)
鈭村綋x=5鏃訛紝a(-5)5+b(-5)3+c(-5)錛濓紞12錛
a(-5)5+b(-5)3+c(-5)-5= -17