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Mathematics
Problem
k
k
k
is the least positive integer for which the function
f
(
x
)
=
(
2
x
+
1
)
50
(
3
x
−
4
)
60
f(x)=(2x+1)^{50}(3x-4)^{60}
f
(
x
)
=
(
2
x
+
1
)
50
(
3
x
−
4
)
60
is increasing in
[
k
,
∞
)
[k, \infty)
[
k
,
∞
)
. The value of
k
k
k
is
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