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प्रश्न
Choose the correct alternative:
`int ("e"^x(x^2 tan^-1x + tan^-1x + 1))/(x^2 + 1) "d"x` is
विकल्प
ex tan-1 (x + 1) + c
tan-1 (ex) + c
`"e"^x (tan^-1 x)^2/2 + "c"`
ex tan-1 x + c
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उत्तर
ex tan-1 x + c
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