X^2=ln4
X=?!
自然對數[基礎]
2011-03-31 5:46 pm
回答 (3)
2011-03-31 5:55 pm
✔ 最佳答案
ln4=2.303 *log4=2.303 *2log2=2.303 *2*0.301≒1.386X^2=1.386
==>X≒1.177
2011-03-31 10:25:45 補充：
更正:
X≒1.177或 -1.177
2011-03-31 10:43 pm
2011-03-31 9:48 pm
x^2 = ln 4
x = √(ln 4) = √(2ln(2))
x = √(ln 4) = √(2ln(2))
收錄日期: 2021-05-04 01:46:28
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20110331000016KK01562