Question

谁能帮我解答这道算术题有谁能帮我算出这道算术题?步骤越详细越好.谢谢!10000×1.03933x=9200×1.052

Answer 1

用计算机咯,你还想口算、笔算?

a^x=b*c^x

x=log(a,b*c^x)

=log(a,b)+log(a,c^x)

=log(a,b)+xlog(a,c)

x=log(a,b)/(1-log(a,c))

=log(a/c,b)

=lgb/lg(a/c)

x=6.4379415221176976877757064482095

你可以代进去验算一下