Array ( [0] => Array ( [title] => L27A [link] => https://www.youtube.com/embed/G0LJrV8y58I ) [1] => Array ( [title] => L27B [link] => https://www.youtube.com/embed/xLMWxAqcCaM ) ) 國立清華大學開放式課程OpenCourseWare(NTHU, OCW) - 第27R講 Linear Transformations I