<iframe width="580" height="385" src="https://www.youtube.com/embed/FEm4-RW64W8?rel=0" frameborder="0" allowfullscreen></iframe> <br>如果你喜歡我們的影片，記得按讚、訂閱和分享，還要打開鈴鐺通知，以第一時間觀看精采的影片Like the video if you enjoyed it Subscribe to the channel so you ... <br><a href="https://www.youtube.com/watch?v=FEm4-RW64W8">source</a>
What more practice of plotting a complex number? Come here! https://youtu.be/Y2lS-i02qHg