作者dali510313 (乳)
看板trans_math
標題[考古] 99成大微分方程
時間Wed Jul 6 17:13:47 2011
For a differential equation x2 y" -3xy' +4y = 0,
(a)
use z = lnx to transform such an equation into an equation with constant
coefficients
(b)
find the general solution of (a) in terms of x.
不好意思,又來打擾各位了。這題讓我想了好久，是假設ｙ的積次因子嗎？
看不太懂題意。先謝謝各位了。
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