| 标题 | 发布时间 | 回答数 | 提问者 |
|---|---|---|---|
| 老师这一步如何算 [数列] | 2023-01-13 | 1 | ******jj |
| 退玛作差法可以再仔细的讲解一下吗 [数列] | 2023-01-11 | 1 | ******673278576553 |
| 见下图 [数列] | 2023-01-11 | 3 | ******194243 |
| 见下图 [数列] | 2023-01-11 | 3 | ******194243 |
| 数列 [数列] | 2023-01-11 | 6 | ******194243 |
| 老师为什么上面是n-1下面是2n-1 [数列] | 2023-01-10 | 1 | ******280267756481 |
| 数学 [数列] | 2023-01-09 | 1 | ******502554956035 |
| 数学 [数列] | 2023-01-09 | 1 | ******502554956035 |
| 见下图 [数列] | 2023-01-07 | 3 | ******194243 |
| 老师，为什么会想到取倒数 [数列] | 2023-01-07 | 3 | ******io |
| 为什么是n+1项没懂 [数列] | 2023-01-07 | 1 | ******005425 |
| 如图 [数列] | 2023-01-05 | 3 | ******952962685803 |
| 如图 [数列] | 2023-01-04 | 1 | ******952962685803 |
| 数学 [数列] | 2023-01-04 | 5 | ******149531946984 |
| 请问老师，这个答案是怎么转化过来的，为什 [数列] | 2023-01-04 | 1 | ******33416 |
| 数列 [数列] | 2023-01-03 | 1 | ******269139631050 |
| 老师，这个不明白 [数列] | 2023-01-03 | 1 | ******io |
| 如图如何化简 [数列] | 2023-01-02 | 1 | ******95958 |
| 能不能把累加累乘具体步骤写出来谢谢 [数列] | 2023-01-01 | 1 | ******474 |
| 见下图 [数列] | 2023-01-01 | 1 | ******05 |
