作者dali510313 (乳)
看板trans_math
标题[考古] 99成大微分方程
时间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,又来打扰各位了。这题让我想了好久，是假设ｙ的积次因子吗？
看不太懂题意。先谢谢各位了。
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