Array ( [0] => Array ( [title] => L11A [link] => https://www.youtube.com/embed/De7I2IxIvk4 ) [1] => Array ( [title] => L11B [link] => https://www.youtube.com/embed/smmyl4tN-uY ) [2] => Array ( [title] => L11C [link] => https://www.youtube.com/embed/2QbmSB0tjtI ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第11R講 Differentiable Functions on Surfaces