-2,-7,-12,-17的通項
回答 (3)
2007-12-28 4:18 am
✔ 最佳答案
通項=-2+(n-1)(-5)=3-5n 
2007-12-28 8:01 pm
-2,-7,-12,-17的通項:
-2+(n-1)(-5)
=-2-5n+5
=-2+5-5n
=3-5n
-2+(n-1)(-5)
=-2-5n+5
=-2+5-5n
=3-5n
2007-12-28 6:01 am
通項 = a + ( n - 1 )d
= - 2 + - 5 ( n - 1 )
= - 2 + - 5n + 5
= 3 + - 5n
= 3 - 5n
So the answer is ( 3 - 5n ) .
= - 2 + - 5 ( n - 1 )
= - 2 + - 5n + 5
= 3 + - 5n
= 3 - 5n
So the answer is ( 3 - 5n ) .
參考: Me
收錄日期: 2021-04-13 14:48:55
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