等差級數求公差
「等差級數求公差」熱門搜尋資訊
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![1051204 等差求首項及公差](https://api.multiavatar.com/1051204+%E7%AD%89%E5%B7%AE%E6%B1%82%E9%A6%96%E9%A0%85%E5%8F%8A%E5%85%AC%E5%B7%AE+-+YouTube.png?apikey=viVnb6N20jclO8)
1051204 等差求首項及公差
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![【例題】已知首項、公差、總和,求項數](https://api.multiavatar.com/%E3%80%90%E4%BE%8B%E9%A1%8C%E3%80%91%E5%B7%B2%E7%9F%A5%E9%A6%96%E9%A0%85%E3%80%81%E5%85%AC%E5%B7%AE%E3%80%81%E7%B8%BD%E5%92%8C%EF%BC%8C%E6%B1%82%E9%A0%85%E6%95%B8%7C+%E6%95%B8%E5%AD%B8+-+%E5%9D%87%E4%B8%80%E6%95%99%E8%82%B2%E5%B9%B3%E5%8F%B0.png?apikey=viVnb6N20jclO8)
【例題】已知首項、公差、總和,求項數
https://www.junyiacademy.org
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![【觀念】由等差級數和反求項數與第幾項](https://api.multiavatar.com/%E3%80%90%E8%A7%80%E5%BF%B5%E3%80%91%E7%94%B1%E7%AD%89%E5%B7%AE%E7%B4%9A%E6%95%B8%E5%92%8C%E5%8F%8D%E6%B1%82%E9%A0%85%E6%95%B8%E8%88%87%E7%AC%AC%E5%B9%BE%E9%A0%85+-+YouTube.png?apikey=viVnb6N20jclO8)
【觀念】由等差級數和反求項數與第幾項
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【觀念】等差數列求項數與公差
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【觀念】等差級數求和(利用首項、末項、項數)
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等差數列
https://www.naer.edu.tw
已知某等差數列的首項為13 且公差為3,求第二十項。 已知某等差數列的第三項為5,第五項為19,求首項及第十項。
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等差數列
https://zh.wikipedia.org
在等差數列中,任何相鄰兩項的差相等,該差值稱為公差(common difference)。 例如數列:. 3, 5, 7, 9, 11, 13, ... 就是一個等 ...
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等差級數
http://tea.wfsh.tp.edu.tw
... 等差級數共有12 項,和是498。 第1 章數列與等差級數. 34. Page 6. 求等差級數的項數及公差. 已知一等差級數的首項為5,末項為95,和為950,求此等差級數的. 項數及公差。
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等差級數師傅
https://web.ntnu.edu.tw
若一等差數列共有n項,其首項為a1,末項為an,公差為d,則這個等差數列的和通常以Sn來表示,也就是等差級數Sn=a1+a2+a3+a4+……+an。 順便教你一招,由Sn=a1+( ...