10/3+(-11/4)-(-5/6)+(-7/12)
10/3+(-11/4)-(-5/6)+(-7/12)
求不定积分 (1) (2) (3) (4) (5) (6) (7) ; (8) (9) (10) (11) (12)
找规律:好难哦2,3,5,7,9,11,(),()4,6,8,9,10,12,(),()
5/8+5/6=( ) 1/7+3/14=( ) 11/18-5/12= 4/9+11/21= 10/11-4/7
1/2+(-2/3)-(-4/5)+(-1/2)=?10/3+(-11/4)-(-5/6)+(-7/12)=?
计算:(1+2-3)(-4+5+6-7)(-8+9+10-11)-12+...+2009.
谁能算24点?(4 11 8 9) (2 13 1 10 )(7 13 4 5)(5 11 12 6)(7 7 7 7)
简便计算:(8/9+10/7+6/11)/(3/11+5/7+4/9)
找规律 3,2,1,7,6,5,4,10,9,8,14,13,12,11()()()()()()()
1+2-3-4+5+6-7-8+9+10-11-12+.+2005+2006=(要过程(简算))
计算.(1)5.2-(负3/4)+(+5/6)-(负7/12) (2)+3又8/11的绝对值-10/27的绝对值-19/
(8/9+10/7+6/11)除以(3/11+5/7+4/9)