1.若3^a = 2,则log 3,8 - 2log 3,6的值是( ) (A)a - 2 (B)3a - (1 + a
log a(2/3)
对数函数题 log a - log b = 3 log (c/2) 求 a = ______________
log(2)3=a,则log(6)4=(
已知a大于b大于1,log(a)b+log(b)a=10/3,求log(a)b-log(b)a的值
已知a<b<1,log(a)b+log(b)a=10/3,求log(a)b-log(b)a的值
若a>0且a≠1,且log a(2a+1)<log a 3a<0,求a的取值范围
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
利用对数的换底公式化简下列 1.log(a)c×log(c)a 2.log(2)3×log(3)4×log(4)5×lo
设a>b>1,log(a)b+log(b)a=10/3,则log(a)b-log(b)a=
已知log(2)3=a,log(3)7=b,试用a,b表示log(14)56
设log(2)(3)=a,log(3)(7)=b,以a,b表示log(21)(56)
27-1/ 若a>0,b>0,a*b>1,log(1/2)[a]=ln2,则log(a)[b]与log(1/2)[a]的