HMMT 十一月 2013 · 冲刺赛 · 第 4 题
HMMT November 2013 — Guts Round — Problem 4
题目详情
英文原题
- [ 6 ] Find the minimum possible value of ( x + 6 x + 2) over all real numbers x .
解析
英文解析
- [ 6 ] Find the minimum possible value of ( x + 6 x + 2) over all real numbers x .
√
2 2
Answer: 0 This is (( x + 3) − 7) ≥ 0, with equality at x + 3 = ± 7.