若sn为等比数列前n项和,则数列sn÷n是等差数列

2025-02-15

sn为等比数列an的前n项和,s2=2,s3=-6

2025-02-15

记sn为等比数列an的前n项和若a5-a3=12

2025-02-15

若sn为等差数列前n项和,则sn,s2n

2025-02-15

sn为等比数列an的前n项和

2025-02-15

设sn为等比数列的前n项和,8a2+a5=0

2025-02-15

等比数列前n项和为sn已知s12s23s3

2025-02-15

已知sn为等比数列an的前n项和,若s2+s5=2s8

2025-02-15

若an为等比数列,sn,s2n

2025-02-15

设sn为等比数列an的前n项和,已知3s3=a4-2

2025-02-15

若sn为等比数列前n项和,则数列sn÷n是等差数列

2025-02-15

sn为等比数列an的前n项和,s2=2,s3=-6

2025-02-15

记sn为等比数列an的前n项和若a5-a3=12

2025-02-15

若sn为等差数列前n项和,则sn,s2n

2025-02-15

sn为等比数列an的前n项和

2025-02-15

设sn为等比数列的前n项和,8a2+a5=0

2025-02-15

等比数列前n项和为sn已知s12s23s3

2025-02-15

已知sn为等比数列an的前n项和,若s2+s5=2s8

2025-02-15

若an为等比数列,sn,s2n

2025-02-15

设sn为等比数列an的前n项和,已知3s3=a4-2

2025-02-15