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(x^3*e^(-x^2))'The calculation above is a derivative of the function f (x)
(x^3)'*e^(-x^2)+x^3*(e^(-x^2))'
3*x^(3-1)*e^(-x^2)+x^3*(e^(-x^2))'
3*x^2*e^(-x^2)+x^3*(e^(-x^2))'
3*x^2*e^(-x^2)+x^3*e^(-x^2)*((-x^2)'*ln(e)+(-x^2*(e)')/e)
3*x^2*e^(-x^2)+x^3*e^(-x^2)*((-x^2)'*ln(e)+(-x^2*0)/e)
3*x^2*e^(-x^2)+x^3*e^(-x^2)*(2*x^(2-1)*ln(e)+(-x^2*0)/e)
3*x^2*e^(-x^2)+x^3*e^(-x^2)*((-x^2*0)/e-2*x*ln(e))
3*x^2*e^(-x^2)+x^3*e^(2*x^(2-1))
3*x^2*e^(-x^2)+x^3*0^(-x^2)
3*x^2*e^(-x^2)+x^3*-2*x*e^(-x^2)
3*x^2*e^((-x)^2)-(2*x^4*e^((-x)^2))
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