About "Exponetial and Logarithmic Functions"
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更新1:
．係乘黎的！
f.4 maths
2006-10-29 10:46 pm
3^x ．4^x = 48
About "Exponetial and Logarithmic Functions"
I want Step~THx U So much!
About "Exponetial and Logarithmic Functions"
I want Step~THx U So much!
回答 (2)
2006-10-29 10:55 pm
✔ 最佳答案
3^x * 4^x = 48(3*4)^x = 48
12^x = 48
log(12^x) = log48
x log(12) = log 48
x = log(48)/log(12)
x = 1.56
2006-10-29 11:07 pm
3^x *4^x = 48
(3*4)^x = 48
12^x = 48
log(12^x) = log(48)
x log(12) = log(48)
x = log(48)/log(12)1.6812412373755872181499834821531/1.0791812460476248277225056927041=
x=1.5578858913022596863820881620758(大約1.56)
(3*4)^x = 48
12^x = 48
log(12^x) = log(48)
x log(12) = log(48)
x = log(48)/log(12)1.6812412373755872181499834821531/1.0791812460476248277225056927041=
x=1.5578858913022596863820881620758(大約1.56)
參考: 計算器
收錄日期: 2021-05-02 21:45:13
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20061029000051KK02697