<P>윤상호 선생님의 답변입니다.</P> <P> </P> <P> </P><SPAN style="TEXT-ALIGN: justify; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; LETTER-SPACING: 0px; COLOR: #000000; FONT-SIZE: 10pt">위의 증명의 핵심은 (a,x)=1이고 (a,y)=1이면, (a,xy)=1임을 이용한 것입니다. </SPAN> <P></P> <P style="TEXT-ALIGN: justify; LINE-HEIGHT: 160%; TEXT-INDENT: 0px; MARGIN: 0px; FONT-FAMILY: '바탕'; COLOR: #000000; FONT-SIZE: 10pt"><SPAN style="TEXT-ALIGN: justify; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; LETTER-SPACING: 0px; COLOR: #000000; FONT-SIZE: 10pt">au+xv=1이고, </SPAN></P> <P style="TEXT-ALIGN: justify; LINE-HEIGHT: 160%; TEXT-INDENT: 0px; MARGIN: 0px; FONT-FAMILY: '바탕'; COLOR: #000000; FONT-SIZE: 10pt"><SPAN style="TEXT-ALIGN: justify; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; LETTER-SPACING: 0px; COLOR: #000000; FONT-SIZE: 10pt">aU+yV=1이므로,</SPAN></P> <P style="TEXT-ALIGN: justify; LINE-HEIGHT: 160%; TEXT-INDENT: 0px; MARGIN: 0px; FONT-FAMILY: '바탕'; COLOR: #000000; FONT-SIZE: 10pt"><SPAN style="TEXT-ALIGN: justify; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; LETTER-SPACING: 0px; COLOR: #000000; FONT-SIZE: 10pt">(au+xv)(aU+yV)=1입니다.</SPAN></P> <P style="TEXT-ALIGN: justify; LINE-HEIGHT: 160%; TEXT-INDENT: 0px; MARGIN: 0px; FONT-FAMILY: '바탕'; COLOR: #000000; FONT-SIZE: 10pt"><SPAN style="TEXT-ALIGN: justify; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; LETTER-SPACING: 0px; COLOR: #000000; FONT-SIZE: 10pt">즉, 전개하면, aauU+auyV+xvaU+xvyV=1입니다.</SPAN></P> <P style="TEXT-ALIGN: justify; LINE-HEIGHT: 160%; TEXT-INDENT: 0px; MARGIN: 0px; FONT-FAMILY: '바탕'; COLOR: #000000; FONT-SIZE: 10pt"><SPAN style="TEXT-ALIGN: justify; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; LETTER-SPACING: 0px; COLOR: #000000; FONT-SIZE: 10pt">따라서 a (auU+uyV+xvU) + xy(vV)=1 임을 알 수 있습니다. (a,xy)=1이라는 거죠.</SPAN></P> <P style="TEXT-ALIGN: justify; LINE-HEIGHT: 160%; TEXT-INDENT: 0px; MARGIN: 0px; FONT-FAMILY: '바탕'; COLOR: #000000; FONT-SIZE: 10pt"><SPAN style="TEXT-ALIGN: justify; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; LETTER-SPACING: 0px; COLOR: #000000; FONT-SIZE: 10pt"></SPAN> </P> <P style="TEXT-ALIGN: justify; LINE-HEIGHT: 160%; TEXT-INDENT: 0px; MARGIN: 0px; FONT-FAMILY: '바탕'; COLOR: #000000; FONT-SIZE: 10pt"><SPAN style="TEXT-ALIGN: justify; LINE-HEIGHT: 21px; FONT-FAMILY: '바탕'; LETTER-SPACING: 0px; COLOR: #000000; FONT-SIZE: 10pt">말씀하신 special case인 x=b^k, y=b인 경우도 마찬가지 증명으로 성립합니다. </SPAN></P>
