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Problem
Problem
If the function
f
(
x
)
=
t
+
3
x
−
x
2
x
−
4
f(x) = \frac{t+3x-x^2}{x-4}
f
(
x
)
=
x
−
4
t
+
3
x
−
x
2
, where
t
t
t
is a parameter, has a minimum and a maximum, then the greatest value of
t
t
t
is .....
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