2010013014

SubArea: 
Exponential functions
Level: 
B
Project ID: 
2010013014
Source Problem: 
2010013015
Accepted: 
0
Clonable: 
1
Easy: 
0
Let f be a function defined by f(x)=(12)x−m−m, where m is a parameter. Which of the following statements about the function f and the line y=3 is true?
The graph of f and the line have always a common point for all m∈(−3;∞).
The graph of f and the line have always a common point for m=−3.
The graph of f and the line have always a common point for all m∈(−∞;−3).
The graph of f and the line have always a common point for all m∈R.