Array ( [0] => Array ( [title] => L15A [link] => https://www.youtube.com/embed/3_Hi40D0B3s ) [1] => Array ( [title] => L15B [link] => https://www.youtube.com/embed/f508e72WtSE ) [2] => Array ( [title] => L15C [link] => https://www.youtube.com/embed/5JRmIV_MEcw ) [3] => Array ( [title] => L15D [link] => https://www.youtube.com/embed/nvq5BeeZLJ8 ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第15R講 Homogeneous function