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Mathematics
Problem
The value of
∫
−
1
10
sgn
(
x
−
[
x
]
)
d
x
\int_{-1}^{10} \operatorname{sgn}(x - [x]) dx
∫
−
1
10
sgn
(
x
−
[
x
])
d
x
is equal to (where,
[
.
]
[. ]
[
.
]
denotes the greatest integer function) a. 9 b. 10 c. 11 d. 12
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