Yumo asked in 科學數學 · 1 decade ago

數列問題(自創的數列or普通數列)20點!!!

請寫出關於以下數列ㄉ公式:

1.等差數列求和

2.等比數列求和

3.等差數列求積

4.等比數列求積

5.等差階乘數列求和

6.等比階乘數列求和

7.等差階乘數列求積

8.等比階乘數列求積

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