%%

Gaokao Math Practice Question

12. （5 分）若存在正数 $x$ 使 $2^{x}(x-a)<1$ 成立, 则 $a$ 的取值范围是（ $)$

  1. A.$(-\infty,+\infty)$
  2. B.$(-2,+\infty)$
  3. C.$(0,+\infty)$
  4. D.$(-1,+\infty)$

Want to know if you got it right?

Answer this and thousands more real Gaokao previous-year questions free, get graded instantly, and climb the global ranked leaderboard.

Practice Gaokao free →

More Gaokao Math questions