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Mathematics
Mathematics
Problem
For
x
∈
R
x \in \mathbb{R}
x
∈
R
, find the set of values attainable by
x
2
−
3
x
+
4
x
2
+
3
x
+
4
\frac{x^2 - 3x + 4}{x^2 + 3x + 4}
x
2
+
3
x
+
4
x
2
−
3
x
+
4
.
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