Help!!! Calculus

2012-12-13 2:12 am
Find d^(2)y/dx^(2) if
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!!!

回答 (1)

2012-12-14 5:13 am
✔ 最佳答案
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