√x4√x
點樣計~ (4係一個指數)
數學開方既問題
2007-09-08 11:56 pm
回答 (2)
2007-09-09 12:13 am
✔ 最佳答案
√x4‧√x =(x4)1/2‧(x)1/2
= x4/2‧x1/2
= x2‧x1/2
= x2+1/2
= x4/2+1/2
= x5/2
√x = x 1/2
根據指數定律am．an = am+n
所以x2‧x1/2 = x2+1/2
2007-09-09 12:06 am
if the x 代表 1.then √ｘ必定＝２
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原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070908000051KK02911