<P> </P> <P style="TEXT-ALIGN: left"><img src="http://thimg.todayhumor.co.kr/upfile/201301/ee1a44fc960cd0b0db1ac4d6b4d25073.jpg" class="txc-image" width="604" height="873" style="WIDTH: 604px; FLOAT: none; HEIGHT: 873px; CLEAR: none" /></P> <P> </P> <P style="TEXT-ALIGN: left"><img src="http://thimg.todayhumor.co.kr/upfile/201301/5eb809e22590b83540eb7b39813a81a6.jpg" class="txc-image" width="608" height="1129" style="WIDTH: 608px; FLOAT: none; HEIGHT: 1129px; CLEAR: none" /></P> <P> </P> <P style="TEXT-ALIGN: left"><img src="http://thimg.todayhumor.co.kr/upfile/201301/7475eb8f37b01565a23ff4a4dca86ab7.jpg" class="txc-image" width="610" height="1087" style="WIDTH: 610px; FLOAT: none; HEIGHT: 1087px; CLEAR: none" /></P> <P> </P> <P style="TEXT-ALIGN: left"><img src="http://thimg.todayhumor.co.kr/upfile/201301/9f70433ca4c5701a17b55f7c8d8cfbcb.jpg" class="txc-image" width="610" height="811" style="WIDTH: 610px; FLOAT: none; HEIGHT: 811px; CLEAR: none" /></P> <P> </P> <P style="TEXT-ALIGN: left"> </P> <P> </P> <P style="TEXT-ALIGN: left"><img src="http://thimg.todayhumor.co.kr/upfile/201301/ed3b51bd0ecfd8e1b89b1d06d83759ab.jpg" class="txc-image" width="612" height="838" style="WIDTH: 612px; FLOAT: none; HEIGHT: 838px; CLEAR: none" /></P> <P></P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">"x^3+y^3=z^3</SPAN></P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="mso-fareast-font-family: 함초롬바탕">조건을 만족하는 최초의 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">z</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">는 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">8.235</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">에 가까운 어떤 무리수이다</SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">.</SPAN></P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt"> x</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">를 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">7</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">로 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">y</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">를 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">6</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">으로 두었을 때 나오는 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">z</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">의 값이 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">8.235... </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">라는 것이다</SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">.</SPAN></P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="mso-fareast-font-family: 함초롬바탕">조건식을 만족하는 최초의 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">z</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">인 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">8.235...</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">를 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">k</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">라고 할 경우</SPAN></P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">z</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">가 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">(k+1) </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">이든 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">(k+2)</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">든 그것은 결국 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">8.235+1 </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">또는 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">8.235+2 </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">등의 숫자가 될 것이다</SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">.</SPAN></P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">x</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">와 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">y</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">가 정수가 되면 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">x^3 </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">이나 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">y^3 </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">역시 정수가 되어야하고 그러면 그 결과 나오는 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">z^3 </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">역시 정수가 될 것이다</SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">. </SPAN></P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt"></SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">그러나 식으로 확인한 바와 같이 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">z^3 </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">이 정수가 되려면 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">z</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">는 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">8.235</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">로 이어지는 무리수에 어떤 정수를 합한 것이 되어야하는데 </SPAN></P><SPAN style="mso-fareast-font-family: 함초롬바탕"> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="mso-fareast-font-family: 함초롬바탕">무리수와 정수를 합해서 정수가 될 수는 없다.</SPAN></P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0><SPAN style="mso-fareast-font-family: 함초롬바탕">따라서 <SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">n=3 </SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">일 때 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">x</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">와 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">y</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">와 </SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">z</SPAN><SPAN style="mso-fareast-font-family: 함초롬바탕">가 모두 정수라는 조건을 만족할 수는 없다</SPAN><SPAN style="FONT-FAMILY: 함초롬바탕; LETTER-SPACING: 0pt; mso-font-width: 100%; mso-text-raise: 0.0pt">."</SPAN></P></SPAN> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0> </P> <P style="mso-pagination: none; mso-padding-alt: 0.0pt 0.0pt 0.0pt 0.0pt" class=0>제 생각에는 결론이 이렇습니다.</P></SPAN>
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