|
|
???2016??????????(???????)
2016?????????????
?????????
??????????10??????3???30??????????????????????????????????????????? 1??3?????? ?
A?3 B??3 C? D??
????????
?????????????????
???????3?????3?
???A?
2????AD??EAC?????AD?BC??B=30???C????? ?
A?50 B?40 C?30 D?20
????????????????????????????
?????AD?BC??B=30?????????????EAD???????????????????EAC?????????????????????EAC=?B+?C????????????
???????AD?BC??B=30?
??EAD=?B=30?
??AD??EAC?????
??EAC=2?EAD=60?
??EAC=?B+?C?
??C=?EAC??B=30?
??C?
3??8?????? ?
A?2 B??2 C?2 D??
????????
?????????????????????
???????8?????? =?2?
???B?
4??????????????????????? ?
A??? B??? C??? D???
??????????????
??????????????????????????????????????
?????????????????????????????
?????????????
??D?
5?????????????? ?
A?0? B?2? C?3? D????
?????????????????
????????????????????x?????????????????
??????????2x?1?1??x?1?
?????x?1??x??2?
???????????2?x?1?
??????1?0?1??3??
??C?
6?????2?x?4?3?3?????3???????????????????? ?
A?3?3?0.4 B?2?3?2 C?3?2?0.4 D?3?3?2
????????????????????
???????????????x?????????????????????????????
??????????? =3????x=3?
?????????????2?3?3?3?4?
??????????3?
????3???????????3??????3?
?????[?2?3?2+3?3?3?2+?4?3?2]=0.4?
??A?
7??????ABCD??AB?AD???????????A??????AD???????????AB?AD??E?F??????E?F??????EF?????????????G????AG?CD??H??????????????????? ?
A?AG???DAB B?AD=DH C?DH=BC D?CH=DH
?????????????
?????????????AG???DAB????????????????????????DAH=?DHA?????AD=DH?
???????????????AG???DAB?
?AG???DAB?
??DAH=?BAH?
?CD?AB?
??DHA=?BAH?
??DAH=?DHA?
?AD=DH?
?BC=DH?
??D?
8????I??ABC????AI??????ABC????????D???BI?BD?DC????????????? ?
A???DB??D???????????DC??
B???DB??D???????????DI??
C??CAD??A??????????DAB??
D???ID??I???????????IB??
????????????????????????????????
??????I??ABC??????AI???BAC?BI???ABC????????????BAD=?CAD??ABI=?CBI?????????????BDI=?DIB?????????????BD=DI?
???????I??ABC????
?AI???BAC?BI???ABC?
??BAD=?CAD??C?????????
=?ABI=?CBI???
?BD=CD??A?????????
??DAC=?DBC?
??BAD=?DBC?
??IBD=?IBC+?DBC??BID=?ABI+?BAD?
??BDI=?DIB?
?BD=DI??B?????????
??D?
9?????ABC??????????????sinA???? ?
A? B? C? D?
???????????????????
????????????????????????????DC?AC???????????????????
?????????????DC?
???????CDA=90?
?DC=?AC=?
?sinA=
???B? ==?
10?????y=ax+b??????y=????????????????????????y=ax2+bx+c??????? ?
A? B? C? D?
?????????????????????????????
????????????????????a?b?????????????????????c????????????????????????
???????????y=ax+b??????????
?a?0?b?0?
??????y=??????????
?c?0?
?a?0?
?????y=ax2+bx+c?????????
?b?0?
??0?
?c?0?
??y????????
??C?
??????????6??????3???18?????????????????
11??????2a2?2= 2?a+1??a?1? ?
???????????????????
??????????2?????????????????????
??????2a2?2?
=2?a2?1??
=2?a+1??a?1??
12???x???????x2?2x+m?1=0???????????m??? 2 ?
??????????
????????x???????x2?2x+m?1=0?????????????????0???????m?????????
???x???????x2?2x+m?1=0?????????? ??????
??=b2?4ac=0?
??22?4?m?1?=0?
???m=2?
????2?
??????2016??????????
?????????2016???????(???)
2016???????????????
????
?????(????l0???????3???30?)????????????? ????????????????????????????
1?-3?????(?)
11A. 3 B.?3 C.D.? 33
???A
??????????
????3?????3??A?
2????AD??EAC?????AD?BC??B=30???C????(?)
A?50B.40 C.30 D.20
???C
?????????????????????
?????AD?BC??B=30?????EAD??B?30?
??AD??????????DAC??DAE?30??C??DAC?30??C?
3?-8?????(?)
A?2B.?2 C.?2 D.?2
???B
??????????
???????2?3??8?????8??????2?
4??????????????????????(?)
A??? B??? C??? D???
???D
???????
???????????????????????????????
??? ????
?2x?1?1,?5???????1????????(?) ?x?1??2
A?0? B?2? C?3? D????
???C
??????????????????
?x?1??????????????2?x?1??????1,0?1???C? x??2?
6?????2?x?4?3?3?????3???????????????????(?)
A?3?3?0.4B?2?3?2 C?3?2?0.4D?3?3?2
???
A
?????????????????
?????????(2?x?4?3?3)?3????x?3?
???????????2?3?3?3?4????????3????3? ????151?1?0?1?0?0??0.4?????A? 5
7??????ABCD??AB?AD???????????A?????
?AD???????????AB?AD??E?F??????E?F ??????1EF?????????????G????AG? 2
CD??H??????????????????(?)
A?AG???DAB B?AD=DHC?DH=BC D?CH=DH
???D
???????????????????????????????????
?????????????????AG???DAB????A???
?DAH??BAH??AB?DC?????BAH??ADH?
????DAH??ADH????AD?DH??AD?BC????DH?BC??B?C????D?
8????I??ABC????AI??????ABC????????D???BI?BD?DC???????????(?)
A???DB??D???????????DC??
B???DB??D???????????DI??
C??CAD??A??????????DAB??
D???ID??I???????????IB??
???D
?????????????????????
?????I??ABC???????AI?BI??BAC??ABC??????
?BAD??CAD???BAD??BCD??CAD??CBD?
????BCD??CBD????DB?DC?A???
?DIB??DAB??ABI?
?DBI??DBC??CBI???ABI??CBI??DAB??DAC??DBC?
????DIB??DBI????DB?DI?B???
?????C????ID?IB?????????D???
9?????ABC??????????????sinA???(?) A.251 B. C.D. 2
???B
?????????????????????
????C?CD?AB?D?BC?2?AB?
S?ABC
?11?2?3??????CD
22
CDB?
AC
?AC
sinA?
10?????y=ax+b??????y=
y=ax+bx+c??????(?)
2c????????????????????????x
???C
?????????????????????????
????????a?0,b?0,c?0????????y=ax+bx+c??????????D? ?c?0???A????x??2b?0??????B??C? 2a
?????(????6???????3???l8?)???????????????
211??????2a-2=??
???2(a?1)(a?1)
????????????????????
??????2(a?1)?2(a?1)(a?1)
12???x???????x2?2x?m?1=0???????????m?????
???2
???????????????
???????????4?4?m?1???4m?8?0????m?2?
13???????????????????8????4?????????????? ???????????????????????????????,?????? ??????0.4???????????????
???8
?????????????????
???????x???2x?0.4????x?8? 8?4?x
14???????????????????????????????????5????
3???????6????3??????????????
???33
???????????
?????????????x????????
5x?3?6x?3????x?6?????????5x?3?33??
15????AB???O?????C?D???O????????CD=2??????????????
???2? 3
???????????????????????
?????OC?OD???C?D???O??????????BOD??COD?60???????OCD????????????O????OC?CD?2?
120??44?1??S?OBC
??
1 33602
2?60??41? ??2
S??CD?S??ODC?S?ODC
?33602
4?
2?2?
?????????????S?
333S??OBDC?
16???????ABCD????22????AC?BD????0?
E?OC??????BE???A?AM?BE??M?BD??F?
FM
??
????????????????????????????
??????ABCD????22????OA?OB????2?
?E?OC??????OE?1?????????BE
S?ABE?11BE?AM?AE?BO????AM
? 22BM
?? ?cos?MBF?BMOBBM?BE??1? ??BF?BFBEOB
???FM
5
?????(????9?????72?)????????????????????? ??????????????????
17?(?????6?)
????????(2x+1)(2x-1)-?x+1)(3x-2)???x=2?l?
????????????
??????4x2?1?(3x?2)
?4x2?1?3x2?x?2
?x2?x?1.
?x=2-1?? ???(2?1)2?(2?1)?1?3?22?2?1?1 |
?5?2
18?(?????6?)
?????????????????????????????????????
???????????????1)??????????????????????
???????????????A??????? B???????C???????D???????????????????????????????????????????????????
?1???1)??????????????????B ???????????????
(2)????????????
(3)??????????????????????????5?1??????????????????????.
????2016???????????????
?????http://www.850500.com/news/2273.html
?????,??! |
|
发表于 2019-9-13 23:46:11