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Mathematics
Problem
A golfer hits a ball from the ground. Its path is modeled by the function
h
(
t
)
=
−
5
t
2
+
20
t
h(t) = -5t^{2} + 20t
h
(
t
)
=
−
5
t
2
+
20
t
, where
h
h
h
is height in meters and
t
t
t
is time in seconds. Find the time interval during which the height of the ball is increasing.
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