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<center><h3>OEF¸ñʽϽ»»¥Ê½Á·Ï°µÄÀý</h3></center> <p>
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<center><h3>OEF¸ñʽϽ»»¥Ê½Á·Ï°µÄÀý</h3></center> <p>
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ÒÔÏÂÊÇ¿ÉÀûÓÃ<b>´´½¨Á·Ï°</b>(createxo)´´½¨µÄ½»»¥Ê½Á·Ï°µÄÀý×Ó.
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ÒÔÏÂÊÇ¿ÉÀûÓÃ<b>´´½¨Á·Ï°</b>(createxo)´´½¨µÄ½»»¥Ê½Á·Ï°µÄÀý×Ó.
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<ol>
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<ol>
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<p><hr width="50%"/> <p>
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<li> <hr style="width:50%"/>
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<li> <b>2άÏòÁ¿µÄ³¤¶È</b>, ƽÃæÄÚÏòÁ¿µÄ³¤¶ÈµÄ¼òµ¥¼ÆËã.
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<b>2άÏòÁ¿µÄ³¤¶È</b>, ƽÃæÄÚÏòÁ¿µÄ³¤¶ÈµÄ¼òµ¥¼ÆËã.
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ÏÂÃæÊÇÕâ¸öÁ·Ï°µÄÍêÕûÔ´´úÂë.
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ÏÂÃæÊÇÕâ¸öÁ·Ï°µÄÍêÕûÔ´´úÂë.
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<p><pre>
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<pre>
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\title{2άÏòÁ¿µÄ·¶Êý}
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\title{2άÏòÁ¿µÄ·¶Êý}
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\language{cn}
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\language{cn}
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\computeanswer{no}
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\computeanswer{no}
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\format{html}
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\format{html}
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\integer{x=random(-10..10)}
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\integer{x=random(-10..10)}
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\integer{y=random(-10..10)}
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\integer{y=random(-10..10)}
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\real{norm=sqrt((\x)^2+(\y)^2)}
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\real{norm=sqrt((\x)^2+(\y)^2)}
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\statement{R<sup>2</sup>ÖÐÏòÁ¿(\x,\y)µÄ³¤¶ÈÊÇʲô?}
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\statement{R<sup>2</sup>ÖÐÏòÁ¿(\x,\y)µÄ³¤¶ÈÊÇʲô?}
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\hint{ÏòÁ¿(x,y)µÄ³¤¶ÈµÈÓÚsqrt(x^2+y^2).}
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\hint{ÏòÁ¿(x,y)µÄ³¤¶ÈµÈÓÚsqrt(x^2+y^2).}
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\answer{³¤¶È}{\norm}
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\answer{³¤¶È}{\norm}
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</pre> <p>
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</pre>
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ÔÚÕâ¸öÁ·Ï°ÖÐ, ¶¨ÒåÁËÁ½¸öËæ»úÕûÊýxÓëy, ËüÃÇÊÇÏòÁ¿µÄ×ø±ê.
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ÔÚÕâ¸öÁ·Ï°ÖÐ, ¶¨ÒåÁËÁ½¸öËæ»úÕûÊýxÓëy, ËüÃÇÊÇÏòÁ¿µÄ×ø±ê.
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µÚÈý¸ö²ÎÊýÊÇʵÊý, Óɳ¤¶È¹«Ê½ËùÈ·¶¨. ±¾Á·Ï°²ÉÈ¡×ÔÓɸñʽµÄ»Ø´ð,
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µÚÈý¸ö²ÎÊýÊÇʵÊý, Óɳ¤¶È¹«Ê½ËùÈ·¶¨. ±¾Á·Ï°²ÉÈ¡×ÔÓɸñʽµÄ»Ø´ð,
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ÆäÃû³ÆÊÇ``³¤¶È'', ÆäÕýÈ·»Ø´ðÓ¦¸ÃÊǵÚÈý¸ö²ÎÊý``·¶Êý''µÄÖµ.
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ÆäÃû³ÆÊÇ``³¤¶È'', ÆäÕýÈ·»Ø´ðÓ¦¸ÃÊǵÚÈý¸ö²ÎÊý``·¶Êý''µÄÖµ.
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±¾Á·Ï°×¼±¸ÁËÒ»¸öÌáʾ, Ëü¸´Ï°Á˳¤¶È¹«Ê½. <p>
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±¾Á·Ï°×¼±¸ÁËÒ»¸öÌáʾ, Ëü¸´Ï°Á˳¤¶È¹«Ê½. <p>
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Äã¿ÉÒÔ
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Äã¿ÉÒÔ
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!set parm=oef_answercnt=1&oef_choicecnt=0&oef_title=2άÏòÁ¿µÄ·¶Êý&oef_format=html&oef_computeanswer=no&level=2&oef_parms=%5Cinteger%7Bx%3Drandom%28-10..10%29%7D%0D%0A%5Cinteger%7By%3Drandom%28-10..10%29%7D%0D%0A%5Creal%7Bnorm%3Dsqrt%28%28%5Cx%29%5E2%2B%28%5Cy%29%5E2%29%7D&oef_statement=R%3Csup%3E2%3C%2Fsup%3EÖÐÏòÁ¿%28%5Cx%2C%5Cy%29µÄ³¤¶ÈÊÇʲô&ansprompt1=³¤¶È&ansgood1=%5Cnorm&oef_hint=ÏòÁ¿%28x%2Cy%29µÄ³¤¶ÈfµÈÓÚ%0D%0Asqrt%28x%5E2%2By%5E2%29.&oef_solution= $
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!set parm=oef_answercnt=1&oef_choicecnt=0&oef_title=2άÏòÁ¿µÄ·¶Êý&oef_format=html&oef_computeanswer=no&level=2&oef_parms=%5Cinteger%7Bx%3Drandom%28-10..10%29%7D%0D%0A%5Cinteger%7By%3Drandom%28-10..10%29%7D%0D%0A%5Creal%7Bnorm%3Dsqrt%28%28%5Cx%29%5E2%2B%28%5Cy%29%5E2%29%7D&oef_statement=R%3Csup%3E2%3C%2Fsup%3EÖÐÏòÁ¿%28%5Cx%2C%5Cy%29µÄ³¤¶ÈÊÇʲô&ansprompt1=³¤¶È&ansgood1=%5Cnorm&oef_hint=ÏòÁ¿%28x%2Cy%29µÄ³¤¶ÈfµÈÓÚ%0D%0Asqrt%28x%5E2%2By%5E2%29.&oef_solution= $
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!href cmd=reply&mode=guided&$parm ½«´ËÀý×Ó¶ÁÈë²Ëµ¥
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!href cmd=reply&mode=guided&$parm ½«´ËÀý×Ó¶ÁÈë²Ëµ¥
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ÒÔ²âÊÔËü. (ÄãÒ²¿ÉÒÔÔÚÔ´ÂëģʽÏ°ÑÔ´´úÂ븴ÖÆÈë²Ëµ¥.)
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ÒÔ²âÊÔËü. (ÄãÒ²¿ÉÒÔÔÚÔ´ÂëģʽÏ°ÑÔ´´úÂ븴ÖÆÈë²Ëµ¥.)
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<p><hr width="50%"/> <p>
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<li> <hr style="width:50%"/>
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<li> <b>2x2¾ØÕóµÄ¼£</b>, ¼ÆËã¾ØÕóµÄ¼£. ÏÂÃæÊÇÁ·Ï°µÄÍêÕûÔ´´úÂë.
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<b>2x2¾ØÕóµÄ¼£</b>, ¼ÆËã¾ØÕóµÄ¼£. ÏÂÃæÊÇÁ·Ï°µÄÍêÕûÔ´´úÂë.
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<p><pre>
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<pre>
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\title{2x2¾ØÕóµÄ¼£}
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\title{2x2¾ØÕóµÄ¼£}
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\language{cn}
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\language{cn}
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\computeanswer{yes}
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\computeanswer{yes}
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\format{html}
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\format{html}
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