Array ( [0] => Array ( [title] => L3A [link] => https://www.youtube.com/embed/6PaY3AmqFzw ) [1] => Array ( [title] => L3B [link] => https://www.youtube.com/embed/wtCx_fieocU ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第3R講 Solving Linear Equations II