%<PLAINTEXT>
%
% $BNL;RJ*M}3X(B : $B1i=,LdBj(B 4-3 $B2rEz(B
% $B:n(B  $B@.(B  $B<T(B : g140828 $BIp@n!!=c(B
% $B:n@.G/7nF|(B : /01/12/25
% $BEE;R%a!<%k(B : g140828@mail.ecc.u-tokyo.ac.jp
%
% \mondai{$B:n@.<T(B}{$B:n@.G/7nF|(B}{$BEE;R%a!<%k(B}{$BLdBjHV9f(B}{$BLdBjJ8(B}{$B2rEz(B}
%
\mondai
{g140828 $BIp@n!!=c(B}
{01/12/25}
{g140828@mail.ecc.u-tokyo.ac.jp}
{4-3}
{$B#1$H#2$NLdBj$N7k2L$OM-8B$N0f8M$N?<$5$NNL;R0f8M$N%]%F%s%7%c%k!J(B4.1$B!K$H4JC1$J(B
$B4X78$,$"$k!#$3$N4X78$r@bL@$;$h!#(B
}
{
$BLdBj(B4.1$B$H(B4.2$B$O$H$b$K%]%F%s%7%c%k$,!J(B4.1$B!K$N%]%F%s%7%c%k$N(B$x < 0$$B$NItJ,$,(B
$\infty
$$B$H$J$C$?$b$N$G$"$k!#$3$3$GLdBj(B4.1$B$H(B4.2$B$NGHF04X?t$O(B$\varphi (0) =
0$$B$H$$$&6-3&>r7o$r;}$D!#$3$N$3$H$+$i!J(B4.1$B!K$N%]%F%s%7%c%k$N$b$H$G5a$a$?GHF0(B
$B4X?t(B$\varphi
(x)$$B$N$&$A(B$\varphi (0) = 0$$B$r$_$?$9$b$N$,!"LdBj(B4.1$B$H(B4.2$B$NGHF04X?t$H$J$k!#(B
}


