Array ( [0] => Array ( [title] => L33A [link] => https://www.youtube.com/embed/cI_h5XTeP98 ) [1] => Array ( [title] => L33B [link] => https://www.youtube.com/embed/zhuc8RVdHfw ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第33R講 Chapter 6:Differentiable mappings