[其他] 微分方程求解

[hank546288 (hanker8862)]

https://imgur.com/a/5On2E
求解第一題 由於微積分還沒教完
大一就先上物理數學 不知道怎麼解這一題
有人能為我解答嗎? 感謝

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推 Rcomplete   : hint: This is an Euler-Cauchy equation.
→ keith291    : 這不是  他二次微分項前面是x的一次方
→ keith291    : https://goo.gl/2794en  它沒有初等函數解
→ keith291    : 確定題目沒有錯？
推 Rcomplete   : Indeed, it's an E.-C. eq. Try to multiply both
→ Rcomplete   : sides of the equation by x and see what's going
→ Rcomplete   : on. I have solved this kind of eq. in the
→ Rcomplete   : textbook by Kreyszig. The procedure described
→ Rcomplete   : above should help. Just give it a try.
推 Rcomplete   : !! I'm sorry. I have mistaken y for y'.
推 Rcomplete   : Sorry.
→ HeterCompute: 2次微分只給一個初始條件，是不是搞錯了什麼？