幫手做依題 5^x+1+5^x=24 x+1同x 係指數 要solve 佢 give 2 decimal place
仲有,有無d初級log function 網習既網介紹俾我做下 拜托^^
Maths From4
2007-12-13 3:38 am
回答 (1)
2007-12-13 3:51 am
✔ 最佳答案
5x + 1 + 5x = 245(5x) + 5x = 24
(5 + 1)5x = 24
6(5x) = 24
5x = 4
log5x = log4
xlog5 = log4
x = log4 / log5
x = 0.86 (correct to 2 sign. fig.)
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