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Mathematics
Problem
The length of the chord cut-off by
y
=
2
x
+
1
y = 2x + 1
y
=
2
x
+
1
from the circle
x
2
+
y
2
=
2
x^2 + y^2 = 2
x
2
+
y
2
=
2
is a.
5
6
\frac{5}{6}
6
5
b.
6
5
\frac{6}{5}
5
6
c.
6
5
\frac{6}{\sqrt{5}}
5
6
d.
5
6
\frac{\sqrt{5}}{6}
6
5
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