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2015-07-08 15:04:49 -0600 asked a question Issues with numerically integrating a complex value function. Any way of getting around the 'Unable to convert 5.0 + 1.0*I to float; use abs() or real_part() as desired' error?

x = var('x') a = 5.0 + I
b = 3.0 + I
numerical_integral((1/sqrt(x^3 + a*x + b)).real(), 0, 3)