Find a solution to dy/dx=xy+7x+2y+14.
I cannot get the answer.
How I did it:
dy/dx=(x+2)(y+7)
1/(y+7)dy=(x+2)dx
ln|y+7|= (x^2/2)+2+C
y=Ce^((x^2/2)+2x)-7
Find a solution to dy/dx=xy+7x+2y+14?
2015-01-18 9:16 pm
回答 (2)
2015-01-18 9:24 pm
✔ 最佳答案
7/x-1Dy/dx=7/x-1
2015-01-20 4:12 am
the correct answer is y=e^((x^2/2)+2x)-7
收錄日期: 2021-04-15 17:58:57
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150118131616AAKGF6Q