80

ED Eβ xҴ

ED Eβ | + |

ED ʴ ɚɮ ɚ

{֚Sx Ehxɨɴ | + { |

Bk M˳n k ɯn

+kk Mhɪ iƤִn

Bkɽn bM EʴnE

=kɨ ɮEn +iəɦ ɯl | 1 |

xɟ ҳn xi ^n

B +n DʴnE

E^ in EbMִn

{^hnM |ʺqMɯl | 2 |

iiM M ɨ{bִn

iM <^ ɯn

ii H xəM ʴM

Ei {֮nʴ`xɨɴ | 3 |