a,b,c為正實數(shù),所以:
1/a+1/b>=2根號1/ab
1/a+1/c>=2根號1/ac
1/b+1/c>=2根號1/bc
以上三式相加得:
2(1/a+1/b+1/c)>=2[1/根號ab+1/根號bc+1/根號ac]
即:1/a+1/b+1/c>=1/根號ab+1/根號ac+1/根號bc
a,b,c為正實數(shù),求證1/a+1/b+1/c>=1/根號ab+1/根號bc+1/根號ac
a,b,c為正實數(shù),求證1/a+1/b+1/c>=1/根號ab+1/根號bc+1/根號ac
其他人氣:925 ℃時間:2020-04-05 12:23:18
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