已知数列lga,lgb,lgc与lga-lg2b,lg2b-lg3c,lg3c-lga都是等差数列.求证:b+c-a/a,a+c-b/b,2a+b-c/a也是等差
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已知数列lga,lgb,lgc与lga-lg2b,lg2b-lg3c,lg3c-lga都是等差数列.求证:b+c-a/a,a+c-b/b,2a+b-c/a也是等差已知数列lga,lgb,lgc与lga
已知数列lga,lgb,lgc与lga-lg2b,lg2b-lg3c,lg3c-lga都是等差数列.求证:b+c-a/a,a+c-b/b,2a+b-c/a也是等差
已知数列lga,lgb,lgc与lga-lg2b,lg2b-lg3c,lg3c-lga都是等差数列.求证:b+c-a/a,a+c-b/b,2a+b-c/a也是等差
已知数列lga,lgb,lgc与lga-lg2b,lg2b-lg3c,lg3c-lga都是等差数列.求证:b+c-a/a,a+c-b/b,2a+b-c/a也是等差
先化简么,lga,lgb,lgc与lga-lg2b,lg2b-lg3c,lg3c-lga
接着,带入b+c-a/a,a+c-b/b,2a+b-c/a,
可得他们是相同的
已知lga,lgb,lgc与lga-lg2b,lg2b-lg3c,lg3c-lga依次成等差数列,求a,b,c之比
已知数列lga,lgb,lgc与lga-lg2b,lg2b-lg3c,lg3c-lga都是等差数列.求证:b+c-a/a,a+c-b/b,2a+b-c/a也是等差
已知lga,lgc,lgb成等差数列,且公差d
已知lgx=2(lga+3lgb)-0.5lgc,则x=
已知a,b,c是不全相等的正数,求证:lga+lgb+lgc
已知lgx=2(lga+3lgb)-1/2lgc,则x=
lga*lgb与lga+lgb,lgab什么关系?
已知(lgc/a)^2=4lga/b.lgb/c,则〡,b,c成A 等比数列 B 等差数列C 常数列 D 以上都不是
lgx=2lga+3lgb-5lgc,求x
a^lga*b^lgb*c^lgc=1求abc
已知ab>0,为什么lg(ab)不等于lga+lgb;lga/b不等于lga-lgb
已知lga+lgb=2,lga*lgb=1/2,则|lga/b|的值为
已知lgx=2(lga+3lgb)-(1/2)lgc,则x=?
已知a>1.b>1.c>1,且lga+lgb=1.求证:logaC+logbC>4lgc
lga-lgb为什么等于lga/lgb
lga与lgb相乘等于多少
若a,b,c是不全相等的正数,用综合法证明lga+b/2+lgb+c/2+lga+c/2>lga+lgb+lgc
|lga|=|lgb|,0