问题
解答题
已知:18b=5,log189=a(a≠2)求log3645.
答案
∵18b=5,∴log185=b
∴log3645=
=1og1845 log1836
=1og185×9 log1818×2
=log185+log189 log1818+log182 a+b 2-a
已知:18b=5,log189=a(a≠2)求log3645.
∵18b=5,∴log185=b
∴log3645=
=1og1845 log1836
=1og185×9 log1818×2
=log185+log189 log1818+log182 a+b 2-a