¹ØϵͼÏñ
ÒÑÖªº¯Êý y=f(x) µÄͼÏñÓÉ 3 ¸öÏ߶Î
a, b, c, ¹¹³É, ÈçÏÂͼËùʾ.
{picture}(10.5,10.5)(-.5,-.5) \put(0,0){\vector(0,1){10}} \put(0,0){\vector(1,0){10}} \put(9.7,0.2){\(x\)} \put(0.2,9.7){\(y\)} \thicklines \special{color=red} \qbezier(3,4)(4.5,4.5)(6,5) \qbezier(6,5)(7,4)(8,3) \qbezier(8,3)(9,4.5)(10,6) \put(2.6,3.5){(3,4)} \put(5.6,5.2){(6,5)} \put(7.6,2.5){(8,3)} \put(9.6,6.2){(10,6)} \put(4.8,4.4){\(a\)} \put(7.3,4.1){\(b\)} \put(9.3,4.4){\(c\)} \end{picture}$ERROR
ÄãµÄÄ¿±êÊǹ¹Ôì·½³Ì
f(x)=f(y) µÄͼÏñ, ËüÓÉÏ߶ι¹³É.
¶ÔÓÚͼÏñÖеÄÿ¸öÏ߶Î, °ÑËüµÄ¶Ëµã×ø±êÌîÈëÏÂÃæÁ½¸ö·½¿òÖÐ.
Èç¹ûÄãµÄ»Ø´ðÊÇÕýÈ·µÄ, ÕâÌõÏ߶λᱻ¼Óµ½Ï°벿µÄͼÐÎÖÐ.
ÄãµÄµÃ·Ö½«ÒÔÄãµÃµ½ÍêÕûͼÏñËùÐèÒªµÄ³¢ÊÔÊýΪÒÀ¾Ý.
µÚ 1 ´Î³¢ÊÔ
°ÑÒÔÏÂÏ߶ΠPQ ¼Óµ½
f(x)=f(y) µÄͼÐÎÖÐ