作者zendla (夏夜薄荷)
看板Grad-ProbAsk
标题[理工] [工数]高阶非线性O.D.E
时间Tue Dec 8 19:16:55 2009
出现三角的题目，感觉不是很好做啊，请大大们教一下
Find the solution of the nonlinear ordinary differential equation
y" + siny = 0
with initial conditions: y(0) = 0, y'(0) = 2. [清大工科]
y y
ans:ln|sec── + tan──| = x
2 2
--
※ 发信站: 批踢踢实业坊(ptt.cc)
◆ From: 134.208.40.34