절댓값이 두 개 있는 일차부등식 푸는 법

절댓값이 두 개 나오는 일차부등식 푸는 법   <TABLE style="BORDER-COLLAPSE: collapse" cellSpacing=1 cellPadding=1 width=600 bgColor=#ffffff> <TBODY> <TR> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">         IX + 1I + I3 - XI > 6</TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> </TD></TR> <TR> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">          IX + 1I + IX - 3I > 6              a          b</TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> </TD></TR> <TR> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">기본값 :        X < - 1   </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">            - 1 ≤  X  < 3   </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">                  X ≥ 3 </TD></TR> <TR> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> 대입    :       a          b                   -          - </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">              a          b             +           -     </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">                 a          b                +           + </TD></TR> <TR> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">           -X - 1 - X + 3 > 6                 - 2X > 6 - 2  대입값 :        X < - 2  </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">          X - 1 - X + 3 > 6                0-X > 2              해는 없다</TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">            X + 1 + X - 3 > 6                  2X  > 8                        X > 4 </TD></TR> <TR> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">  공통값 :  수직선에 그림        X < - 1           X < - 2                    X < - 2   </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">   `  - 1 ≤  X  < 3         해는 없다                  해는 없다</TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">             수직선에 그림 `      X ≥ 3            X > 4                  X > 4 </TD></TR> <TR> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> 합집합 : 수직선에 그림</TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> </TD></TR> <TR> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> 답       : </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%">        X < - 2   또는    X > 4 </TD> <TD style="BORDER-RIGHT: #96ddf3 2px solid; BORDER-TOP: #96ddf3 2px solid; BORDER-LEFT: #96ddf3 2px solid; BORDER-BOTTOM: #96ddf3 2px solid" width="33%"> </TD></TR></TBODY></TABLE>