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The value of int0^1 dx/(7^[[1/x]]) is ( ...

The value of `int_0^1 dx/(7^[[1/x]])` is ( where [.] denotes the greatest integer function)

A

` 1 + 6 log_e(6/7)`

B

`1-6log_e (6/7)`

C

`log_e (7/6)`

D

`1-7log_e(6/7)`

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