数学题目:3000×(1+8%)X=8000 急!3000×(1+8%)X=8000X是多少次方?求X的值!给解题步骤和答案啊?
2019-04-13
数学题目:3000×(1+8%)X=8000 急!
3000×(1+8%)X=8000
X是多少次方?
求X的值!
给解题步骤和答案啊?
优质解答
3000×(1+8%)^X=8000
(1+8%)^X=8/3
x lg(1+8%)=lg(8/3)
x=lg(8/3)÷lg(1.08)
=12.74
3000×(1+8%)^X=8000
(1+8%)^X=8/3
x lg(1+8%)=lg(8/3)
x=lg(8/3)÷lg(1.08)
=12.74