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1.2.3 $BDd;_B'$K$D$$$F(B
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1.2 Newton $BK!(B
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1.2.1.0.1 T$B@h@8$N9V5A$N;W$$=P(B
1.2.2 Newton $BK!$rMQ$$$?=iEyE*$J7W;;(B
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1.2.3 $BDd;_B'$K$D$$$F(B
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1.2 Newton $BK!(B
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1.2.1.0.1 T$B@h@8$N9V5A$N;W$$=P(B
Masashi Katsurada
$BJ?@.(B21$BG/(B7$B7n(B9$BF|(B
![\begin{jexample}
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[$BJ?J}:,(B]\upshape
$a>0$\ $B$KBP$7$F!](img116.png)
![\begin{jexample}[$BJ?J}:,$N5U?t(B]
$1/\sqrt{a}$\ $B$r(B $f(x)=1/x^2-a=0$\ $B$N:,$H9M$($F(B..
...$B%5%5!](img117.png)
![\begin{jexample}[$BN)J}:,(B]
$\sqrt[3]{a}$\ $B$r(B $f(x)=x^3-a=0$\ $B$N:,$H9M$($k$H!](img118.png)
![\begin{jexample}[$B5U?t(B]\upshape
$1/a$\ $B$r(B $f(x)=a-1/x=0$\ $B$N:,$H8+$J$9$H(B
\begin{displaymath}
x_{k+1}=x_{k}(2-a x_{k})
\end{displaymath}$B$H$J$k!#(B\qed
\end{jexample}](img119.png)
![\begin{jexample}[$B%W%m%0%i%`Nc(B]\upshape
\begin{itembox}{\texttt{newton.c}}\footnotesize
\verbatimfile{newton.c}
\end{itembox}\end{jexample}](img120.png)