若log(3)(2)=a,log(6)(3)=b,则有b(1+a)=1 证明
若log(3)(2)=a,log(6)(3)=b,则有b(1+a)=1 证明
证明:log(A)M=log(b)M/log(b)A (b>0且b≠1).
log(2)(a)=log(3)(b)=log(5)(c)
已知log(3)2=a log(5)2=b用ab表示log(30)90
证明对数运算法则(1)log(a)(MN)=log(a)(M)+log(a)(N); (2)log(a)(M/N)=
利用换底公式证明:log(a)b.log(b)c.log(c)a=1
设a>b>1,log(a)b+log(b)a=10/3,则log(a)b-log(b)a=
计算题(log)已知log底数5 ^2=a,log底数5 ^3=b求log底数5根号54 的值
若log(a)x=2,log(b)x=3,log(c)x=6,则log(abc)x=?括号内为底数
1.若方程(lgx)^2-2lgx-2=0有两个根A,B.则log(A)B+log(B)A=?2.1) 0.125*4^
证明:log(a)bXlog(b)cXlog(c)a=1
已知log(2)3=a,log(3)7=b,试用a、b表示log(14)56.