log3 5-log3 15+1/2log9 27 的值
log3 5-log3 15+1/2log9 27 的值
log 243÷log9 =log3^5÷log3^2 =log3^5-log3^2 然后怎么写
由换底公式怎么得到log9(x+5)=log3[2(x+5)]=1/2log3(x+5)
(log2 3+log8 9)(log3 4+log9 8+log3 2)的运算过程
(log2^3 +log3^5) x ( log3^5 +log9^5 ) x lg 2 ,
(1)log4 27乘以log25 8乘以log9 5 (2)(log4 3+log8 3)(log3 2+log9 2
填空题:方程log3(x-1)=log9(x+5)的解是____________
log3(5)+log9(5)求大神帮助
(log3 4+log3 8)(log2 3+log2 9)+(log3 根号2)(log9 7)/(log1/3 7)
(log3 2)+log9 2)*(log4 3+log8 3)+(log3 3^1/2)^2+ln根号e-lg1
1.log2 3*log3 4*log4 5*log5 2 2.(log4 3+log8 3)8(log3 2+log9
求值.(log3^2+log9^3)*(log4^3+log8^3)+(log3^3^1/2)^2+ln根号下e-lg1