determine if the second funtion is the inverse of the first function 数学题
问题描述：
determine if the second funtion is the inverse of the first function 数学题
determine if the second funtion is the inverse of the first function
y=2x^2-3, X我的结果是：y= 正负* 根号（1/2（x+3）） 请问X然后,restrict the domain so that the inverse of each funtion is a funtion .
restrict the domainX的取值范围?
题目是,y=x^2 -1y=(x+1)^2 y=(x-2)^+1
X取值范围是R啊.我知道怎样 inverse funtion 但是 "规定范围使inverse funtion is a funtion"又是怎么做呢?
答
y=2x^2-3,X