Array ( [0] => Array ( [title] => L16A [link] => https://www.youtube.com/embed/XAn35nX9mPY ) [1] => Array ( [title] => L16B [link] => https://www.youtube.com/embed/yAng3skaumA ) [2] => Array ( [title] => L16C [link] => https://www.youtube.com/embed/J4h0mmlTBHY ) [3] => Array ( [title] => L16D [link] => https://www.youtube.com/embed/12BUQJnRLU0 ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第16講 Methods of Proving