x = cos t + sin t
y = cos t - sin t
Thz so much!!!~!!!
更新1:
Sorry, but the correct answer is 2/((sint-cost)^3) Thank you very much!!!
Sorry, but the correct answer is 2/((sint-cost)^3) Thank you very much!!!
收錄日期: 2021-04-23 23:25:23
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20121212000051KK00223