若Y=根号下X-1 + 根号下2-X,试化简丨X-4丨+丨X丨
问题描述:
若Y=根号下X-1 + 根号下2-X,试化简丨X-4丨+丨X丨
答
X-1>=0,x>=1
2-X>=0,x
若Y=根号下X-1 + 根号下2-X,试化简丨X-4丨+丨X丨
X-1>=0,x>=1
2-X>=0,x