<P>손성민 선생님의 답글입니다.</P> <P> </P> <DIV class=board> <P> <OBJECT class=MATH classid=clsid:70E4BF88-2729-4A46-8794-D459BAC0EB63 width=128 align=absMiddle height=28><PARAM NAME="_cx" VALUE="3386"><PARAM NAME="_cy" VALUE="740"><PARAM NAME="BackColor" VALUE="4063280"><PARAM NAME="Enabled" VALUE="-1"><PARAM NAME="Script" VALUE="[0]#wh4/28.9`5.6/12,[1]{x`equal`1 `arrow` {x}^{2}`equal`1}/{#xc333333}"><PARAM NAME="FontSize" VALUE="12"><PARAM NAME="FontColor" VALUE="3355443"><PARAM NAME="Editable" VALUE="0"><PARAM NAME="Measurable" VALUE="0"></OBJECT></P> <P>T T T (x가 1일때)</P> <P>F T F (x가 1이 아닐때) </P> <P> </P> <P> </P> <P> <OBJECT class=MATH classid=clsid:70E4BF88-2729-4A46-8794-D459BAC0EB63 width=141 align=absMiddle height=28><PARAM NAME="_cx" VALUE="3730"><PARAM NAME="_cy" VALUE="740"><PARAM NAME="BackColor" VALUE="4063280"><PARAM NAME="Enabled" VALUE="-1"><PARAM NAME="Script" VALUE="[0]#wh4/31.9`5.6/12,[1]{x`notequal`1 `arrow` {x}^{2}`equal`1}/{#xc333333}"><PARAM NAME="FontSize" VALUE="12"><PARAM NAME="FontColor" VALUE="3355443"><PARAM NAME="Editable" VALUE="0"><PARAM NAME="Measurable" VALUE="0"></OBJECT></P> <P>F T T (x가 1일때)</P> <P>T T F (x가 1이 아닐때) </P> <P> </P> <P>따라서 두번째 명제는 진리표에 의해 거짓입니다.</P></DIV>
