log25﹙3﹚=a,log25﹙4﹚=b,求log5﹙72﹚
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log25﹙3﹚=a,log25﹙4﹚=b,求log5﹙72﹚
log25﹙3﹚=a,log25﹙4﹚=b,求log5﹙72﹚
log25﹙3﹚=a,log25﹙4﹚=b,求log5﹙72﹚
log25﹙3﹚=a ,log25﹙4﹚=b
log5(3)=2a,log5(2)=b,
log5(72)=log5(2^3 *3^2)
=3log5(2)+2log5(3)
=4a+3b
log25﹙3﹚=a,log25﹙4﹚=b,求log5﹙72﹚
log25﹙3﹚=a,log25﹙4﹚=b,求log5﹙72﹚log1/27(1/7)=a,log1/3(1/5)=b,求log81(175)
log2• log25=?
已知log5(3)=a,log5(4)=b.用a,b表示log25(12)
已知log5(3)=a,log5(4)=b.求:log25(12)
5^log25^49等于?5的log25的49=?
已知log5 3=a log5 4=b求证 log25 12=1/2(a=b)
(log5根号2*log49 81)/(log25 1/3*log7 4开3次方)=?
5^log25(lg2-1)^2=?
log25^625+e^in2+lg1/100=
已知log5的3次方=a,log5的4次方=b,使用a,b表示log25的12次方
已知log5(6)=a,log5(4)=b.用a,b表示log25(12).
已知log23=a,log25=b,则用a,b表示log2 9/5=?
log3 5=a log3 7 =b 求log25 7
(log4 3+log8 3)(log3 5+log9 5)(log5 2+log25 2)=
用换底公式化简式子log25*log34*log59=?
5^log25(lg2的平方+lg2.5)=?
log3 5=a log3 7 =b 求log25 7这里没看懂是怎么变形的