log(2)(a)=log(3)(b)=log(5)(c)
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
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
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
化简2log`5(10)+log`3(0.25)+log`1/5(125)=
已知log(2)[log(3)(log(4) x)] = log(3) [log(4) (log(2) y)]=0,求x
设A^2+B^2=C^2 求证 log以(C+B)为底A的对数+log(C-B)A=2log(C+B)*log(C-B)
log(x+5)=log(x)+log(2) log(8)+log(x)=log(24) 2log(x)=log(2x)
已知log(14)7=a log(14)5=b 用ab表示log(35)70=
证明:log(A)M=log(b)M/log(b)A (b>0且b≠1).
若log(a)x=2,log(b)x=3,log(c)x=6,则log(abc)x=?括号内为底数
已知log(a)x=2,log(b)x=3,log(c)x=6,求log(abc)x的值(括号里的为底数,外面的是真数)