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Integrate x^2+5x+1dx/(2x^3+15x^2+6x+23)^1/2

  • calculus - ,

    Let 2x^3+15x^2+6x+23 = u
    du = 6x^2 + 30x + 6
    = 6(x^2 + 5x + 1)dx
    You got lucky with this one!
    Therefore the integrand can be written
    and the integral is
    = (1/3)(2x^3+15x^2+6x+23)^1/2

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