log9(45)-log9(5)
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log9(45)-log9(5)
log9×log4
log4^27×log(8)25×log9^5
log4^27×log(8)25×log9^5
log3(x-1)=log9(x+5) 中log9(x+5) 怎么化简?
log3(x-1)=log9(x+5) 中log9(x+5) 怎么化简?
已知log9 5=a,log9 7=b,求log35 9的值在线等
log9(x-5)+log9(x=+3)=1 9是那个log的底
log9 3+log9 27=怎么求~
计算3^log9(64)
怎们算log9 27?
log3*2/log9*4
log9^27=
log9 27等于多少
log9等于什么
log9 9等于几?
log9 81=?
计算(log5^3+log25^3)(log9^5+log27^5)