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Mathematics
Mathematics
Problem
Determine the set of all real values of
k
k
k
for which the quadratic equation
x
2
+
k
x
+
4
=
0
x^{2}+kx+4=0
x
2
+
k
x
+
4
=
0
has no real roots. a)
∣
k
∣
=
4
|k| = 4
∣
k
∣
=
4
b)
∣
k
∣
>
4
|k|>4
∣
k
∣
>
4
c)
∣
k
∣
<
4
|k|<4
∣
k
∣
<
4
d)
k
>
4
k>4
k
>
4
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