$BHyJ,78?t(B $B$N0UL#(B

Next: $BB?JQ?t4X?t(B Up: 1$BJQ?t%Y%/%H%kCM4X?t$N4pK\E*@- Previous: $BDjM}$N>ZL@(B

$BHyJ,78?t(B $\vec f'(a)$ $B$N0UL#(B

$\vec f'(a)$ $B$,B8:_$7!"(B $\vec f'(a)\ne\vec 0$ $B$G$"$l$P!"(B $B$=$l$O!"(B

$B$r6J@~$H9M$($?$H$-$N!"(B $\vec f(a)$ $B$K$*$1$k@\@~$NJ}8~$rI=$9%Y%/%H%k$G$"$k!#(B

$\begin{jexample}[$B<x6H=*N;8e$N<ALd$G=P$7$?Nc(B] $I:=\R$, $\vec f(t):=\begin{pmatri... ...}1\\ 2\end{pmatrix}$\ $B$O@\@~$NJ}8~$rM?$($k%Y%/%H%k(B $B$G$$

$\vec f'(a)=\vec 0$ $B$G$"$k>l9g$O!"(B $B$?$H$((B $\vec f$ $B$,(B $B5i$G$"$C$F$b!"(B $B@\@~$,0z$1$J$$(B ($BB8:_$7$J$$(B) $B>l9g$b$"$k!#(B

$\begin{jexample} $\vec f(t):=\begin{pmatrix}t^3\\ t^2\end{pmatrix}$\ $B$O!$

Next: $BB?JQ?t4X?t(B Up: 1$BJQ?t%Y%/%H%kCM4X?t$N4pK\E*@- Previous: $BDjM}$N>ZL@(B

Masashi Katsurada
$BJ?@.(B23$BG/(B6$B7n(B2$BF|(B