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Determine : `int x*e^(x^2) dx`

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svjr | Student, Undergraduate | Honors

Posted November 9, 2011 at 10:21 PM via web

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Determine : `int x*e^(x^2) dx`

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justaguide | College Teacher | (Level 2) Distinguished Educator

Posted November 9, 2011 at 10:46 PM (Answer #1)

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We have to determine `int x*e^(x^2) dx`

Let `y = x^2` , `dy/dx = 2x` => x*dx = (1/2)*dy

=> `int e^y*(1/2) dy`

=> `e^y/2 + C`

Substitute y = x^2

=> `e^(x^2)/2 + C`

The required integral is `e^(x^2)/2 + C`

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