ï¼1ï¼x=-1,x=2代å
¥æ¹ç¨ -a+1/(-1+b)=-3/2 ············â
2a+1/(3+b)=3 ············â¡
解ä¹ï¼ a=1, b=-1, f(x)=x+1/(x-1)
(2) 对称ä¸å¿æ¯ï¼1,1ï¼ç¹ï¼è¯æå¦ä¸ï¼
设Pï¼x0,y0ï¼ä¸Qï¼xâ²,yâ²ï¼æ¯å
³äºç¹ï¼1,1ï¼å¯¹ç§°ç两ç¹ï¼ä¸Pç¹å¨y= f(x)=x+1/(x-1)å¾åä¸ï¼
äºæ¯ï¼ y0=x0+1/(x0-1) ················(#)
x0+xâ²=2
y0+yâ²=2
å° x0+xâ²=2-xâ², y0=2-yⲠ代å
¥ï¼#ï¼ï¼å¾2-yâ² =2-xâ²+1/(1-xâ²)
åç®ï¼yâ²=xâ²+1/(xâ²-1), ä¹å°±æ¯è¯´ï¼ç¹Qï¼xâ²,yâ²ï¼ä¹å¨f(x)=x+1/(x-1)çå¾åä¸ï¼
y=f(x)=x+1/(x-1)çå¾åæ¯ä¸ä¸ªä¸å¿å¯¹ç§°å¾å½¢ã
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