3.5.1 $\lambda$ $B$NCM$H0BDj@-(B

$\lambda$ $B$NCM$H0BDj@-$O!"$I$&$J$k$+?tCM2r@O$r$7$F$_$?I=$G$"$k!#(B $B6-3&>r7o$O!"LdBj(B($A$), ($B$)$B5Z$S!"(B $\dsp\frac{\rd }{\rd x}u(0,t)=0$$B!"(B $u(1,t)=0$$B$N!"$I$N;~$G$b!"(B $B=i4|>r7o$r6-3&>r7o$rK~$?$9G$0U$N4X?t$r$B!J(B $t=j\tau=300$$B$^$G!#GHF0$N>uBV$OI.

$$\begin{array}{\vert c\vert c\vert c\vert} \hline \lambda & .. ...$B/;(B\\ \hline 1.2 &\ \ $BIT0BDj(B\ \ & $BH/;6(B \\ \hline \end{array}$$

$B$3$N7k2L$h$j!"%(%M%k%.!<$H0BDj@-$K$O!"6&DL$9$k$b$N$,$"$k!#(B
$B!J(B$N$$B$NCM$rBg$-$/$9$k$K$D$l%(%M%k%.!<$,8:>/$9$k(B $0<\lambda<1$$B$H$-!"(B $BGHF0$,;_$^$C$F$$$/$N$O4|BT$I$&$j!#!K(B