作者chienluen (小捻)
看板ck61st323
标题[问题] 好久不见~微积分又来惹~
时间Wed Jun 16 16:21:26 2010
想问问下面两题证明题~
Q1
Consider the second-order linear differential equation with constant
coefficients y"(t)+p*y'(t)+q*y(t)=c.
Prove that if p^2>4q the general solution is of the form
y=d1*exp(r1*t)+d2*exp(r2*t)+c/q
Q2
Show that, if y"=-y, y'=1, and y=0 when x=0, then y=sinx.
麻烦大家惹~我期末考快喷了= =+
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