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Mathematics
Problem
Find the intervals on which the function
f
(
x
)
=
(
x
+
2
)
e
−
x
f(x) = (x+2)e^{-x}
f
(
x
)
=
(
x
+
2
)
e
−
x
is a. increasing b. decreasing. [CBSE 2000C]
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