Question

下列圖形中，方程log_x（y+1）-log_x2=1對(duì)應(yīng)的圖形是

1. A.
   
2. B.
   
3. C.
   
4. D.
   

Answer 1

C
分析：根據(jù)對(duì)數(shù)函數(shù)的性質(zhì)即可確定答案．
解答：∵對(duì)數(shù)函數(shù)的底數(shù)x＞0且x≠1，
而A，B，D圖象中x均包含1
∴排除A，B，D
∴答案為C．
點(diǎn)評(píng)：本題考查了對(duì)數(shù)函數(shù)的性質(zhì)，只要利用對(duì)數(shù)的底數(shù)取值范圍即可得出答案．