8,10,12,6,4,2,( ),( ),( )
8,10,12,6,4,2,( ),( ),( )
2,3,4,6,6,9,8,( 12 ),( 10
2+(-4)+6+(-8)+10+(-12)+...+994+(-996)+998+(-1000)=?
(-2)+4+(-6)+8+(-10)+12+(-14)+……+2008
3,6,8,8,4,2,8,() A.6 B.8 C.10 D.12
求不定积分 (1) (2) (3) (4) (5) (6) (7) ; (8) (9) (10) (11) (12)
2,-4,-6,8,10,-12( )( ) ( )...第100个数为( ),第2014个数为( )
一组数列 2,6,2,7,13,12,8,10,(),4,8,2,6,11,12,9,22,13
算24点:(1)1 5 9 12 (2)1 6 10 13 (3)2 4 8 11(4)3 5 12 12
找规律:好难哦2,3,5,7,9,11,(),()4,6,8,9,10,12,(),()
找规律:一 5,11,23,(),65,().二 8,2,10,4,12,6,(),().
老师布置的作业!计算:2+(-4)+6+(-8)+10+(-12).+994+(-996)+998+(-1000)