Array ( [0] => Array ( [title] => L15A [link] => https://www.youtube.com/embed/s3wd0219Ymc ) [1] => Array ( [title] => L15B [link] => https://www.youtube.com/embed/qihVP3jDWNM ) [2] => Array ( [title] => L15C [link] => https://www.youtube.com/embed/1EpDuBWpJGs ) [3] => Array ( [title] => L15D [link] => https://www.youtube.com/embed/foR53NEVoK8 ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第15R講 4.3 Operations on Continuous Mappings