CHUYÊN
,A1 -2013
i gian làm bài
013
Câu I ( ) y x36mx2 9x2m 1) m1 2) m
5 4 Câu II (2 )
1)
cos3x 3sin3xcos2x 3sin2x3cosx 3sinx20 2)
0 3 6 2 2 x xy y x y xy Câu III ( )
1)
3
0 2 2 1 dx x x
2) Cho a ,,b c
1 b c a
2 1 2 2 1 2 2 1 2 2 12 2 c b a a c c b b a P
Câu IV ( )
1) Oxy )
3 1 ; 0 ( M N(0;7)
2)
Câu V( )
1)
2)
4 3 1 2 1 : ) (d1 x y z
2 3 2 2 1 : ) ( 2 y z x d (d3) (d1) qua (d2)