设a=1/log(4)3+1/log(7)3,求证a属于(3,4)
设a=1/log(4)3+1/log(7)3,求证a属于(3,4)
设a>b>1,log(a)b+log(b)a=10/3,则log(a)b-log(b)a=
log(2)3=a,则log(6)4=(
设log(2)(3)=a,log(3)(7)=b,以a,b表示log(21)(56)
设a>b>1,且loga(b)+log(b)a=10/3,求loga(b)-log(b)a
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
设log(a)2/3下面
设y=log(a)((x-3)/(x+3)) (a>0,a≠1)的定义域为[s,t),值域为(log(a)((at-a)
log(27)16/log(3)4=
(1)a^1/2*a^1/3*a^1/4 (2)log³₂·log₃5·logS
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