设log2^3=a,log5^3=b,则lg3等于
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设log2^3=a,log5^3=b,则lg3等于
设log2^3=a,log5^3=b,则lg3等于
设log2^3=a,log5^3=b,则lg3等于
log2^3=lg3/lg2=a,所以 lg2=lg3 /a
log5^3=lg3/lg5=b 所以 lg5=lg3/b
所以1=lg10=lg2+lg5=lg3 /a+lg3/b=(1/a+1/b)lg3
lg3=1/(1/a+1/b)=ab/(a+b)
a*b/(a+b)
设log2^3=a,log5^3=b,则lg3等于
log2/27及 log 3=a log5=b
若(log2(3))^x-(log5(3))^x>=(log2(3))^(-y)-(log5(3))^(-y) 则 A.x+y>0 B.x+y=0 D.
一道高一数学题7设log2=a,log3=b,则log5^12=?
设log5 7=a ,log2 5=b ,则log2 7= 能写写过程么,
2log5 10+log5 0.25= 2log5 25-3log2 64= log2(log2 16)= 已知lg2=a,lg3=b,求log3 4,log2 12
已知log2 3=a,log5 2=b,用a,b表示log30 12
已知Log5(3)=a,log5(4)=b,则log5(270)可表示为
1、计算log5^35+2log1/2^根号2-log5^1/50-log5^14 2、已知log3^7=a,log2^3=b,求log21^28
设a=log3²,b=log5²,c=log2³,比较大小
log2(5) ×log5(8)=3步骤
设log5 7=a,(5为底数),log2 5 =b ,(2为底数),则log2 7 等于多少,(2为底数)
设log5 7(7是上面的)=a ,log2 5(5是上面的)=b,则log2 7(7是上面的)
已知log5 (3)=a,log5(4)=b ,用a,b表示log5(24)
(log2(3))^x-(log5(3))^x>=(log2(3))^(-y)-(log5(3))^(-y)
log2(a)=log3(b)=log5(c)
已知a=log3(4),4^b=3,则log5(a)+log5(b)=?
已知log5(3)=a,log5(4)=b,则log5(270)可表示为