对数计算2
log18(9)=a log18(5)=b
用a b 表示log36(45)
要过程谢谢
参考答案:log36(45) =log18(45)/log18(36)
=log18(5)+log18(9)/1+log18(2)
=log18(5)+log18(9)/1+1-log18(9)
=a+b/2-a
log18(9)=a log18(5)=b
用a b 表示log36(45)
要过程谢谢
参考答案:log36(45) =log18(45)/log18(36)
=log18(5)+log18(9)/1+log18(2)
=log18(5)+log18(9)/1+1-log18(9)
=a+b/2-a