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Integrals
easy
0:00.0
If
∫
0
k
2
x
d
x
=
4
\int_0^k 2x dx = 4
∫
0
k
2
x
d
x
=
4
, what is the positive value of
k
k
k
?
A
2
2
2
B
1
1
1
C
2
\sqrt{2}
2
D
4
4
4
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