等比数列a+log2底3，a+log4底3，a+log8底3求a
等比数列a+log2底3,a+log4底3,a+log8底3的公比为...
因为a+log2(3),a+log4(3),a+log8(3)成等比数列 所以[a+log4(3)]?=[a+log2(3)]*[a+log8(3)] a?+2alog4(3)...
等比数列a+log2底3,a+log4底3,a+log8底3求a
(a+log<4>3)^2 = (a+log<2>3)(a+log<8>3)换底 全部变成2 为底 [a+(1/2)log<2>3]...
...记作b=log a n.例如因为2的3次方=8,所以lo
1.x-3是kx^4 +10x -192的一个因式所以x=3是kx^4 +10x -192=0的一个根所以81k+30-192=0所以k=2 2.设log(a)b=t ...
...a,log3(2)=b,用a,b表示log4(63)2.已知loga(b)+logb...
1、 (1)因为 log12(7)=m ==>1/m=log(7)12=log(7)3+2*log(7)2 n/m=log(7)3 又有 2*log(7)2=1/m-n/m ...
...*log5(2)3.(log4(3)+log8(3))*(log3(2)+log9(2))第...
2.log2(3)*log3(4)*log4(5)*log5(2)3.(log4(3)+log8(3))*(log3(2)+log9(2))第一道题没有3
...1/x=logA6 - logA3=logA21/(2y)=1/(2log4A)=1/(log2A...
2²=4所以,2lg2=lg2²=lg4,2log4A=2lgA/lg4=lgA/lg2=log2A,1/(2y)=1/(2log4A)=1/(log2A)=logA2明白...
...log4 5 · log5 22.(log4 3 + log8 3)(log3 2+log9...
1. log2 3 · log3 4 · log4 5 · log5 2=lg3/lg2·lg4/lg3·lg5/lg4·lg2/lg5=12. (log4 3 + log8 3)(...
...+3lg2lg(5)+lg^3(5)等于多少3.若3^a=2,则log3(8) - 2...
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对数的运算①[log2(125)+log4(25)+log8(5)]*[log5(2)+...
①([lg5^3/lg2]+[lg5^2/lg2^2]+[lg5/lg2^3])=[3+1+(1/3)](lg5/lg2)=(13/3)(lg5/lg2)([lg2/lg5]+[lg2^...
数学问题2若log(底数a真数四分之三),则a的取值范围是 爱问知...
若log(底数a 真数四分之三)＜1，则a的取值范围是 log(3/4)＜1 首先，定义域为a＞0，且a≠1 ...