1加2加2的平方加2的立方一直加到2的九十九次方
人气:176 ℃ 时间:2019-08-17 17:38:59
解答
1+2+2²+2³+2^(4)+2^(5)+…+2^(99)
原式=2^0+2^1+2²+2³+2^(4)+2^(5)+…+2^(99)
可令S=2^0+2^1+2²+2³+2^(4)+2^(5)+…+2^(99)
则 2S=2^1+2²+2³+2^(4)+2^(5)+…+2^(99)+2^(100)
∵2S-S=S=2^(100)-1
推荐
猜你喜欢
- 有一首歌曲里面的歌词有让我们笑的就像花儿一样,让我们跑的就像风一样,让我们牵着双手飞翔在这美丽又寂静
- She comes from singapore 疑问、提问
- The teacher will get a____ if you are late again
- 平行四边形的周长面积的公式
- 已知在等比数列{an}中,a3=-2,a6=54,则a9=
- I know this period of time is very difficult,but I also want to live!I don't want to die now,just want to quiet,quiet,qu
- I don't know,what's the situation.What is this?Why is that
- 喜羊羊在底面半径是6cm的圆柱形玻璃器放了一部分水,然后在水中浸没了一个高4.5cm完全取出时水面下降0.5cm