阅读短文，根据短文内容判断正误，在括号内写正确或错误。

    I'm Chinese girl. My English name is Lily. I like English very much. I can speak(说) some English now. I have a good friend. Her name is Ann. She has long hair and blue eyes. She's from America. This is my classroom. It's not big, but it's nice and clean. There are twenty-four desks and chairs in it. They are new. I like my classroom very much.

下面是某同学对多项式（x²﹣4x+2）（x²﹣4x+6）+4进行因式分解的过程．

解：设x²﹣4x=y

原式=（y+2）（y+6）+4（第一步）

=y²+8y+16（第二步）

=（y+4）²（第三步）

=（x²﹣4x+4）²（第四步）

请问：

若函数y=f（x）是函数y=2^x的反函数，则f（2）的值是（　　）