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int(0)^(oo) e^(-mx) x^(7) dx is...

`int_(0)^(oo) e^(-mx) x^(7) dx ` is

A

`(lfloorm)/( 7^(m))`

B

`(lfloor 7)/(m^(7))`

C

`(lfloorm)/( 7^(m+1))`

D

`(lfloor7)/( m^(8))`

Text Solution

Verified by Experts

The correct Answer is:
`(lfloor7)/( m^(8))`
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