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(dy)/(dx)+(3x^(2)tan^(-1)y-x^(3))(1+y^(2...

`(dy)/(dx)+(3x^(2)tan^(-1)y-x^(3))(1+y^(2))=0`
The differential equation has integrating factor-

A

`e^(x^(2))`

B

`e^(x^(3))`

C

`e^(3x^(2))`

D

`3^(3x^(3))`

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