A) \[(4,\infty )\]
B) \[[4,\infty )\]
C) \[\{4\}\]
D) \[\phi \]
Correct Answer: D
Solution :
\[f(x)={{x}^{2}}-4x+a\]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