高校数学の質問スレ Part424

>>548

log( α^N+(1-α)^N )
= log((a/(1-a))^N + 1 ) + N log( 1- a )

n log((a/(1-a))^N + 1 )
= n×a/(1-a))^N × log( 1 + a/(1-a))^N )/( a/(1-a))^N )→ 0
N → 1
n log( 1- a )= log( 1- a )/a × an → 0