已知正数a,b满足a+b=1,求证:ab+(1/ab)>=(17/4)不等式解```

已知正数ab满足ab=1,求证a2+b2≥a+b 一个小小数学题已知正数a,b,c满足：ab+bc+ca=1,求证 已知正数a,b满足a+b=1,求证:ab+(1/ab)>=(17/4)不等式解``` 用不等式解决问题：已知正数a.b满足a+b=1求证ab+1/ab>=17/4 已知两正数ab 满足a+b=1求证 4/a +1/b大于等于9 已知正数a,b满足a+b=1,求ab+1/ab的最小值.紧急, 已知正数a,b满足3ab+a+b=1 ab的最大值是? 已知正数a,b满足a+b=1,则ab+2/ab的最小值 已知正数a、b满足a+b=1.求ab+(1/ab)的最小值 已知正数a,b满足a2+b2=7ab.求证：lg a+b/3 =1/2(lg a +lg b ) 已知正数a,b满足ab=1,则满足不等式a/a^2+1+b/b^2+1 已知正数ab满足a+2b=3,则1／a+1/b的最小值 已知正数ab满足a+b=1,求1/a+2/b的最小值. 已知正数a,b,c,A,B,C满足A+a=B+b=C+c=k,求证aB+bC+cA 已知正数a,b,c,A,B,C满足a+A=b+B=c+C=k,求证aB+bC+cA 若正数ab满足a+b=1求证根号2a+1+根号2b+1 已知正数a,b满足ab=a+3b+9,则ab的最小值为 已知正数ab满足ab=4a+3b+4,求a+b的最小值.