Array ( [0] => Array ( [title] => L22A [link] => https://www.youtube.com/embed/UQnJRYTDCYs ) [1] => Array ( [title] => L22B [link] => https://www.youtube.com/embed/fwV1CgYK9Vc ) [2] => Array ( [title] => L22C [link] => https://www.youtube.com/embed/G6DXisrQgxM ) [3] => Array ( [title] => L22D [link] => https://www.youtube.com/embed/mbQ_sjGL_No ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第22R講 5.2 The Weierstrass M-test