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A??|a2+b+c|+|a+b2+c|?1??a2+b2+c2<100
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C??|a+b+c2|+|a+bc2|?1??a2+b2+c2<100
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2??5?????z???1+i?z=2?i????????z??????????????? ?
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A?1 B?2 ?sin?D?4 2x?????????? C?3
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5??5???2016??????????????f?x?=cos??x+?????0?0???????????????f??x?+f?x?=0??tan?=2??f?????? ?
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???????
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?f??x?+f?x?=0?
?f?x?=cos?2x+???????
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2015-2016???????????????????????
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3?a?N}?N={y|y=b2?4b+5?b?N}?N?????? ??M={x|x=a2+2a+2??M?? ?A?M?N B?N?M
C?M=N D?M?N????????
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=? ?
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6???F1?F2????C?x2?y2=2????????P?C??|PF1|=2|PF2|??cos?F1PF2=? ?
A? B? C? D?
7?????x?y????z=??????? ?
A?[0?] B?????0]?[?+?? C?[2?] D?????2]?[?+?? 8?????????
p1??x0??0?+?????x0???x0
p2??x0??0?1??logx0?logx0
x
x? p3??x??0?+?????x?logp4??x??0?????x?log
???????? ?
A?p1?p3 B?p1?p4 C?p2?p3 D?p2?p4
dx??a2014?a2012+2a2014+a2016?9?????{an}???????a2013+a2015=
???? ?
A??2 B?2? C?? D?4?2
10????C1?x2+y2?4x=0???C2?y?y?mx?x?=0????????????m??????? ?
A???
??? B????+?? ?0???0?? C?[??D?] ???????
11??????a?b?0????A??????????B?F???????AF?BF???ABF=???
A?
12??? B? C? ????????e??????? ? D? ?1???????D?????
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13?????y2=8x???F?????135????????A?B??????AB????
14??????????????????????????????????n?n?1?n?N??????????????an??a6= ++
++=?
15??????ABC???A?B?C????????a?b?c????????????????????????
?sinA?sinB?a?b????????
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?tanA?tanB?a?b????????
?sin2A?sin2B?a?b????????
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e2???????M?????????????????????e1??e1?e2???e1+2e2
??????
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17?????f?x?=2cosx?sinx?cosx?+m?m?R???y=f?x????????
?????y=g?x??????y=g?x????
??????m???
?????ABC????A?B?C??????a?b?c????a+c=2?????????? ?ABC???l??????
18??????P?ABCD???ABCD?????ABC=60?AB=PC=2?
?1??????PAD???ABCD?
?2?????A?PC?B????? ?
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20???D??O?x2+y2=8???????D?x????DN????N?T???DN?????
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2????????? ?
A?y??? B???y=?x?? C??????? D???y=x??
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3???M={x|x=a2+2a+2?a?N}?N={y|y=b2?4b+5?b?N}??M?N???????A?M?N B?N?M
C?M=N D?M?N????????
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??????M={x|x=a2+2a+2=?a+1?2+1?a?N}={2?5?10?}?
N={y|y=b2?4b+5=?b?2?2+1?b?N}={1?2?5?10?}?
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发表于 2019-9-13 23:46:11