a=(1/4)^(-3/8)
b=4^(1/3)
c=(log13)/(log3)
求大小排列，要附過程喔~thank you~~
高中數學一題 指對數比大小?
2016-07-08 5:20 am
回答 (2)
2016-07-08 6:06 am
✔ 最佳答案
Sola>0，b>0，c>0
a=(1/4)^(－3/8)=[2^(－2)]^(－3/8)=2^(3/4)
b=4^(1/3)=2^(2/3)
c=log13/log3>log9/log3=2
a^4=2^3=8
b^4=2^2=4
c^4>16
c^4>a^4>b^4
c>a>b
2016-07-21 12:05 pm
a=(1/4)^(-3/8)=1.681792831
b=4^(1/3)=1.587401052
c=(log13)/(log3)=2.334717519
c>a>b
b=4^(1/3)=1.587401052
c=(log13)/(log3)=2.334717519
c>a>b
收錄日期: 2021-04-18 15:14:22
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20160707212038AAyHrXC