1.

int e^(-5x).cos 12 x dx =

Answer»

`(E^(-5x))/(169) `[ 5 cos 12 x - 12 sin 12 x] + C
`(e^(-5x))/(169) `[ 5 cos 12 x + 12 sin 12 x] + c
`- (e^(-5x))/(169) `[ 5 cos 12 x - 12 sin 12 x] + c
`- (e^(-5x))/(169) `[ 5 cos 12 x + 12 sin 12 x] + c

Answer :C


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