设a,b,c都大于0 1.求证:c/a+a/(b+c)+b/c≥2 2.求4/a+1/b+1/c+(a+b+c)^2的最
设a,b,c大于0,求证c/(a+b)+a/(b+c)+b/(c+a)大于等于3/2.
设a,b,c都是正数,求证:1/2a+1/2b+1/2c大于等于1/(b+c)+1/(a+c)+1/(a+b)
设a,b,c都是正数,求证:1/2a+1/2b+1/2c 大于等于1/(b+c)+1/(a+c)+1/(a+b)
已知a,b,c是正数,求证 a^2(b)×b^(2b)×c^(2c)大于等于a^(a+b)×b^(a+c)×c^(a+b
设A.B.C均为正数,求证c/(a+b)+a/(b+c)+b/(c+a)>=3/2
设a,b,c,属于正实数,求证a/(b+c)+b/(c+a)+c/(a+b)>=2/3
a>b>c,a+b+c=0,求证c/(a-c)>c/(b-c)
设a,b,c为整数,且a*a+b*b+c*c-2a+4b-6c+14=0,求a,b,c
a b c都为正实数且a+b+c=1求1/(a+b)+1/(b+c)+1/(c+a)大于等于9/2
设a、b、c均为正实数,求证:1/2a+1/2b+1/2c≥1/(b+c)+1/(c+a)+1/(a+b)
设啊,a,b,c均为实数,求证1/2a/2b/2c≥1/b+c +1/c+a +1/a+b
设a,b大于0,2c大于a+b,求证:c-根号c^2-ab 小于 a 小于 c+根号c^2-ab