問題詳情
3. (5%) Which statements are correct for the equation (2y2 +3x)dx+ 2xydy = 0?
(A) The differential equation is exact.
(B) It is possible to find an integrating factor so that the equation becomes exact.
(C) x=-y2 is one possible solution.
(D) x2y2+x3 =1 is one possible solution.
(E) None of the above
參考答案
答案：[無官方正解]
難度：計算中-1
書單：沒有書單，新增