1. 國立台灣海洋大學 Partial differential equation 作業 4 教授：陳正宗終生特聘教授 學生：徐胤承 學號： M98520034

2. We could exercise the method of characteristics We had a PDE like this

3. Then we were able to find the solution

4. The movie that was seen below was form the answer of last page

5. When T was at 45, we could plot these three figures

6. Finally, we plotted the figures that was including two kinds of expression We used the parametric equation to draw this illustration

7. We made the express in terms of x and y to find this

8. The end Thanks for comment