log3^2=a log3^7 =b 求log8^98
7log8^9=a log3^5=b 求lg2 lg3 lg5
已知log8^9=a log3^5=b 求lg 2
log2(3)=a,log3(7)=b.log12(56)=log3(7*8)=log3(7)+3log3(2)
log8 3=a,log3 5=b求lg5用ab表示
已知log8 3=a,log3 5=b,求lg 5
log3(2)*log8(9)
已知log8^3=a,log3^5=b,用a,b表示lg5
已知log8 9=a,log3 20=b,用a,b表示lg2
若log8(3)=a,log3(5)=b,试用a,b表示log5
log3 5=m ,log8 3=n 求lg5
1.(log3 2+log9 2)(log4 3+log8 3) 2.已知log18 9=a.18^b=5.求log36
(9/4)^(-1/2)+log8 9*log3 32=