→ impreza987:2階Legendre方程式~ 09/21 23:19
→ mike7689:基本上若不是物理的...Bessel和Legendre看看就好XD 09/21 23:24
推 Tall781218:y=c1(3x^2-1)+c2[(x^2-1/3)ln[(x-1)(x^2-1/3)/(x+1)] 09/21 23:28
→ Tall781218:+2X]] 09/21 23:29
→ Tall781218:c1(3x^2-1)+c2[(x^2-1/3)ln[(x-1)(x^2-1/3)/(x+1)+2x] 09/21 23:29
→ Tall781218:上面這個才對 顆顆 09/21 23:30