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प्रश्न
`int ("e"^x(x - 1))/(x^2) "d"x` = ______
विकल्प
`x"e"^(-x) + c`
`("e"^x)/(x^2) + c`
`(x - 1/x)"e"^x + c`
`("e"^x)/x + c`
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उत्तर
`("e"^x)/x + c`
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