求下列各式的值 1)log2 6+log2 3 2)lg5+lg2 3)log5 3+log5 三分之一 4)log3
求下列各式的值 1)log2 6+log2 3 2)lg5+lg2 3)log5 3+log5 三分之一 4)log3
计算log2 6-log2 3,lg5+lg2,log5 3+log5 1/3,log3 5-log3 15
计算:(lg2)2+3lg5+lg5(1+lg2)+lg8+log2(5)log5(4)
(log3^4+log5^2)(log2^9+log2^根号3)
log的计算 :log2(20)-log4(25)= log3(2)×log2(5)×log5(3)=?log2[log
log2(3)*log3(5)*log5(8)(具体步骤)
lg2+lg5-log2(3)乘log3(2)
(Log2)的三次方+(Log5)的三次方+3*lg2*lg5=?
已知lg2=a,lg3=b,求下列各式的值 (1)lg6 (2)log3|4 (3)log2|12 (4)lg3/2
若3/log2 19+2/log3 19+1/log5 19=log19 m,求m的值
帮忙换底化简下列:logaC*logcA .log2 3 * log3 4 * log4 5 * log5 2
利用换底公式求值:1.log2 25 ×log3 4 ×log5 9 2.(log4 3+log8 3)(log3 2+