已知log8 9=m,log3 5=n,求log5 12

已知log8 9=m,log3 5=n,求log5 12 log3 5=m ,log8 3=n 求lg5 若log3^5 log5^7 log7^x=log4^2 log6^4 log8^6,求x=? 若log8(3)=a,log3(5)=b,试用a,b表示log5 (log4 3+log8 3)(log3 5+log9 5)(log5 2+log25 2)= log3(2)*log5(3)*log8(5) 已知log8^9=a log3^5=b 求lg 2 已知log2(5)=m ,log5(3)=n,求用m,n表示lg180 已知log8 3=a,log3 5=b,求lg 5 化简log3(4)*log4(5)*log5(8)*log8(9)的结果是? 7log8^9=a log3^5=b 求lg2 lg3 lg5 log2^5*log3^2倍根号2*log5^9=