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Mathematics
Mathematics
Problem
Find the value of
k
k
k
such that
y
=
1
2
x
2
+
(
k
−
2
)
x
+
k
2
+
4
y = \frac{1}{2}x^2 + (k - 2)x + k^2 + 4
y
=
2
1
x
2
+
(
k
−
2
)
x
+
k
2
+
4
is *not* positive definite. What relationship does the graph have with the
x
x
x
-axis in this case?
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