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Mathematics
Mathematics
Problem
For which values of
m
m
m
does the function
f
(
x
)
=
x
2
−
4
x
+
m
f(x)=\sqrt{x^{2}-4x+m}
f
(
x
)
=
x
2
−
4
x
+
m
yield real values for every real
x
x
x
? a)
m
>
4
m>4
m
>
4
b)
m
≥
4
m\ge 4
m
≥
4
c)
m
≤
4
m\le 4
m
≤
4
d)
m
=
4
m=4
m
=
4
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