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Mathematics
Mathematics
Problem
For the function
f
t
(
x
)
=
x
2
−
2
t
x
f_t(x)=x^2-2tx
f
t
(
x
)
=
x
2
−
2
t
x
restricted to the interval
[
0
,
5
]
[0,5]
[
0
,
5
]
, let
t
=
3
t=3
t
=
3
. At which
x
x
x
-value does
f
3
f_3
f
3
attain its absolute minimum on this interval? a)
x
=
1.5
x=1.5
x
=
1.5
b)
x
=
3
x=3
x
=
3
c)
x
=
2.5
x=2.5
x
=
2.5
d)
x
=
5
x=5
x
=
5
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