5/1+10/1+15/1+20/1+25/1(怎么做)
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/01 14:10:51
5/1+10/1+15/1+20/1+25/1(怎么做)
5/1+10/1+15/1+20/1+25/1(怎么做)
5/1+10/1+15/1+20/1+25/1(怎么做)
即是5+10+15+20+25=75
75
原式=5+10+15+20+25 为等差数列相加 =(5+25)*2+15=75
即5+10+15+20+25=75
5+10+15+20+25+1x5=80
2/1 3/1 4/1 5/1 6/1 8/1 10/1 12/1 15/1 20/1
(1,5,10),(2,10,20),(3,15,30)( )
(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)(用简算)
(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)=?简便计算方法
(1+1/3+1/5+1/10+1/15+1/30)/(1/2+1/4+1/6+1/12+1/20+1/60)=?简算
1/1*5+1/5*10+1/10*15+1/15*20+1/20*25 要怎么算
1/1×5+1/5×10+1/10×15+1/15×20+1/20×25
1/(5+10)+1/(5+10+15)+1/(5+10+15+20)简算怎么做?
输出以下杨辉三角形.1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1 1 7 21 35 35 21 7
编程,打印杨辉三角(要求七行) 1 1 1 1 2 1 1 3 3 1 1 4 6 4 1 1 5 10 10 5 1 1 6 15 20 15 6 1
1/10:1/15:1/20 化简
1 1 -1 1 -2 1 1 -3 3 -1 1 -4 6 -4 1 1 -5 10 x 5 -1 1 -6 15 -20 15 -6 1 x是?
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)快
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)=
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)怎么解?
(1/2+1/4+1/6+1/8)-(1/3+1/6+1/9+1/12)+(1/4+1/8+1/12+1/16)-(1/5+1/10+1/15+1/20)
5/1+10/1+15/1+20/1+25/1(怎么做)
(1/2-1/3)+(1/4-1/5)+(1/7-1/10)+(1/14-1/15)+(1/28-1/30)(1/2-1/3)+(1/4-1/5)+(1/7-1/10)+(1/14-1/15)+(1/28-1/30)