A) \[(4,\infty )\]
B) \[[4,\infty )\]
C) \[\{4\}\]
D) \[\phi \]
Correct Answer: D
Solution :
f(x)=x2-4x+a always attains its minimum value. So its range must be closed. So, a= \[\{\phi \}\]You need to login to perform this action.
You will be redirected in
3 sec