The Tesla Roadster… it’s a two-seater sports car, very high performance…In fact, it’s beat any Ferrari or Aston Martin in acceleration.And it has more than twice the energy efficiency of a Prius.
数学不是沿着一条清理得很好的高速公路小心行进,而是一次进入陌生荒野的旅程,探险者常常会迷路。
在数学中,最简单的问题往往导致最深刻的发现。