3.2 $BJ#AG?t$rMxMQ$9$kJ}K!(B

Next: 4 $B0lJ}$+$iB>J}$rF3$/J}K!(B Up: 3 $BJL$K2CK!DjM}$rF3$/J}K!(B Previous: 3.1 $B$*$*$^$+$J<0$+$i:n$kJ}K!(B (PDF ファイル: sinadd.pdf)

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$\begin{displaymath} \cos\theta + i\sin\theta \end{displaymath}$

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$\begin{displaymath} (\cos x+i\sin x)(\cos y+i\sin y)=\cos(x+y)+i\sin(x+y) \end{displaymath}$

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$\begin{displaymath} \mbox{$B:8JU(B} = \cos x\cos y-\sin x\sin y + i(\cos x\sin y + \sin x\cos y) \end{displaymath}$

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$\begin{displaymath} e^{ix}=\cos x+i\sin x \end{displaymath}$

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$\begin{displaymath} (\cos x+i\sin x)'=i(\cos x+i\sin x) \hspace{1zw}(=-\sin x+i\cos x) \end{displaymath}$

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$BG\$K$J$k(B ( $(e^{ix})'=ie^{ix}$ )$B!"$H$$$&@-

Next: 4 $B0lJ}$+$iB>J}$rF3$/J}K!(B Up: 3 $BJL$K2CK!DjM}$rF3$/J}K!(B Previous: 3.1 $B$*$*$^$+$J<0$+$i:n$kJ}K!(B

Shigeharu TAKENO
2003$BG/(B 3$B7n(B 4$BF|(B

3.2 $BJ#AG?t$rMxMQ$9$kJ}K!(B