想問點解
[ (-3)^4 ]開4次方
= (-3)^(4/4)
= 3 ??
4/4 唔係 = 1咩? 咁 (-3)^1 點解唔係 = -3?
thankies!!
MATH - INDICES LAWS
2007-05-26 7:16 pm
回答 (2)
2007-05-26 7:57 pm
{(-3)^4}^4
81^4
=43046721
&
(-3)^1=-3
81^4
=43046721
&
(-3)^1=-3
收錄日期: 2021-04-11 17:42:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20070526000051KK01153