3.1.55 \(\int (a+b x)^2 \, dx\) [55]

Optimal. Leaf size=14 \[ \frac {(a+b x)^3}{3 b} \]

[Out]

1/3*(b*x+a)^3/b

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Rubi [A]
time = 0.00, antiderivative size = 14, normalized size of antiderivative = 1.00, number of steps used = 1, number of rules used = 1, integrand size = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {32} \begin {gather*} \frac {(a+b x)^3}{3 b} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(a + b*x)^2,x]

[Out]

(a + b*x)^3/(3*b)

Rule 32

Int[((a_.) + (b_.)*(x_))^(m_), x_Symbol] :> Simp[(a + b*x)^(m + 1)/(b*(m + 1)), x] /; FreeQ[{a, b, m}, x] && N
eQ[m, -1]

Rubi steps

\begin {align*} \int (a+b x)^2 \, dx &=\frac {(a+b x)^3}{3 b}\\ \end {align*}

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Mathematica [A]
time = 0.00, size = 14, normalized size = 1.00 \begin {gather*} \frac {(a+b x)^3}{3 b} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(a + b*x)^2,x]

[Out]

(a + b*x)^3/(3*b)

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Maple [A]
time = 0.09, size = 13, normalized size = 0.93

method	result	size
default	\(\frac {\left (b x +a \right )^{3}}{3 b}\)	\(13\)
gosper	\(\frac {1}{3} b^{2} x^{3}+a b \,x^{2}+a^{2} x\)	\(21\)
norman	\(\frac {1}{3} b^{2} x^{3}+a b \,x^{2}+a^{2} x\)	\(21\)
risch	\(\frac {b^{2} x^{3}}{3}+a b \,x^{2}+a^{2} x +\frac {a^{3}}{3 b}\)	\(29\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((b*x+a)^2,x,method=_RETURNVERBOSE)

[Out]

1/3*(b*x+a)^3/b

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Maxima [A]
time = 0.28, size = 20, normalized size = 1.43 \begin {gather*} \frac {1}{3} \, b^{2} x^{3} + a b x^{2} + a^{2} x \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)^2,x, algorithm="maxima")

[Out]

1/3*b^2*x^3 + a*b*x^2 + a^2*x

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Fricas [A]
time = 1.65, size = 20, normalized size = 1.43 \begin {gather*} \frac {1}{3} \, b^{2} x^{3} + a b x^{2} + a^{2} x \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)^2,x, algorithm="fricas")

[Out]

1/3*b^2*x^3 + a*b*x^2 + a^2*x

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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 19 vs. \(2 (8) = 16\).
time = 0.01, size = 19, normalized size = 1.36 \begin {gather*} a^{2} x + a b x^{2} + \frac {b^{2} x^{3}}{3} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)**2,x)

[Out]

a**2*x + a*b*x**2 + b**2*x**3/3

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Giac [A]
time = 1.14, size = 12, normalized size = 0.86 \begin {gather*} \frac {{\left (b x + a\right )}^{3}}{3 \, b} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)^2,x, algorithm="giac")

[Out]

1/3*(b*x + a)^3/b

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Mupad [B]
time = 0.03, size = 20, normalized size = 1.43 \begin {gather*} a^2\,x+a\,b\,x^2+\frac {b^2\,x^3}{3} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a + b*x)^2,x)

[Out]

a^2*x + (b^2*x^3)/3 + a*b*x^2

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