指數.....--math -help

2007-01-18 2:28 am
1. 1/ ^3 √(x^-4)

ans:x^(4/3)

回答 (3)

2007-01-18 3:19 am
✔ 最佳答案
1 / 3 √ x-4
= 1 / (x-4)1/3

= 1 / x-4/3
= x4/3

x^ -1 = 1/x
運用了負指數
參考: 中四級數學書
2007-01-19 1:03 am
正確ans.:
= 1 / (x-4)1/3

= 1 / x-4/3

= x4/3

2007-01-28 14:02:04 補充:
good ans.
2007-01-18 4:39 am
1 / 3√(x^-4)

= 1 /(x^-4)1/3

= 1 / x^-4/3

= x^(4/3)


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