3.181 \(\int (b+2 c x+3 d x^2) (b x+c x^2+d x^3)^n \, dx\)

Optimal. Leaf size=24 \[ \frac{\left (b x+c x^2+d x^3\right )^{n+1}}{n+1} \]

[Out]

(b*x + c*x^2 + d*x^3)^(1 + n)/(1 + n)

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Rubi [A]  time = 0.0175243, antiderivative size = 24, normalized size of antiderivative = 1., number of steps used = 1, number of rules used = 1, integrand size = 29, \(\frac{\text{number of rules}}{\text{integrand size}}\) = 0.034, Rules used = {1588} \[ \frac{\left (b x+c x^2+d x^3\right )^{n+1}}{n+1} \]

Antiderivative was successfully verified.

[In]

Int[(b + 2*c*x + 3*d*x^2)*(b*x + c*x^2 + d*x^3)^n,x]

[Out]

(b*x + c*x^2 + d*x^3)^(1 + n)/(1 + n)

Rule 1588

Int[(Pp_)*(Qq_)^(m_.), x_Symbol] :> With[{p = Expon[Pp, x], q = Expon[Qq, x]}, Simp[(Coeff[Pp, x, p]*x^(p - q
+ 1)*Qq^(m + 1))/((p + m*q + 1)*Coeff[Qq, x, q]), x] /; NeQ[p + m*q + 1, 0] && EqQ[(p + m*q + 1)*Coeff[Qq, x,
q]*Pp, Coeff[Pp, x, p]*x^(p - q)*((p - q + 1)*Qq + (m + 1)*x*D[Qq, x])]] /; FreeQ[m, x] && PolyQ[Pp, x] && Pol
yQ[Qq, x] && NeQ[m, -1]

Rubi steps

\begin{align*} \int \left (b+2 c x+3 d x^2\right ) \left (b x+c x^2+d x^3\right )^n \, dx &=\frac{\left (b x+c x^2+d x^3\right )^{1+n}}{1+n}\\ \end{align*}

Mathematica [A]  time = 0.0466691, size = 21, normalized size = 0.88 \[ \frac{(x (b+x (c+d x)))^{n+1}}{n+1} \]

Antiderivative was successfully verified.

[In]

Integrate[(b + 2*c*x + 3*d*x^2)*(b*x + c*x^2 + d*x^3)^n,x]

[Out]

(x*(b + x*(c + d*x)))^(1 + n)/(1 + n)

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Maple [A]  time = 0.005, size = 34, normalized size = 1.4 \begin{align*}{\frac{x \left ( d{x}^{2}+cx+b \right ) \left ( d{x}^{3}+c{x}^{2}+bx \right ) ^{n}}{1+n}} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((3*d*x^2+2*c*x+b)*(d*x^3+c*x^2+b*x)^n,x)

[Out]

x*(d*x^2+c*x+b)/(1+n)*(d*x^3+c*x^2+b*x)^n

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Maxima [F(-2)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Exception raised: ValueError} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((3*d*x^2+2*c*x+b)*(d*x^3+c*x^2+b*x)^n,x, algorithm="maxima")

[Out]

Exception raised: ValueError

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Fricas [A]  time = 1.49556, size = 74, normalized size = 3.08 \begin{align*} \frac{{\left (d x^{3} + c x^{2} + b x\right )}{\left (d x^{3} + c x^{2} + b x\right )}^{n}}{n + 1} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((3*d*x^2+2*c*x+b)*(d*x^3+c*x^2+b*x)^n,x, algorithm="fricas")

[Out]

(d*x^3 + c*x^2 + b*x)*(d*x^3 + c*x^2 + b*x)^n/(n + 1)

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Sympy [F(-1)]  time = 0., size = 0, normalized size = 0. \begin{align*} \text{Timed out} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((3*d*x**2+2*c*x+b)*(d*x**3+c*x**2+b*x)**n,x)

[Out]

Timed out

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Giac [B]  time = 1.16479, size = 92, normalized size = 3.83 \begin{align*} \frac{{\left (d x^{3} + c x^{2} + b x\right )}^{n} d x^{3} +{\left (d x^{3} + c x^{2} + b x\right )}^{n} c x^{2} +{\left (d x^{3} + c x^{2} + b x\right )}^{n} b x}{n + 1} \end{align*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((3*d*x^2+2*c*x+b)*(d*x^3+c*x^2+b*x)^n,x, algorithm="giac")

[Out]

((d*x^3 + c*x^2 + b*x)^n*d*x^3 + (d*x^3 + c*x^2 + b*x)^n*c*x^2 + (d*x^3 + c*x^2 + b*x)^n*b*x)/(n + 1)