3.6.87 \(\int \frac {1}{\sqrt {x} (a+b x)^{5/2}} \, dx\) [587]

Optimal. Leaf size=43 \[ \frac {2 \sqrt {x}}{3 a (a+b x)^{3/2}}+\frac {4 \sqrt {x}}{3 a^2 \sqrt {a+b x}} \]

[Out]

2/3*x^(1/2)/a/(b*x+a)^(3/2)+4/3*x^(1/2)/a^2/(b*x+a)^(1/2)

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Rubi [A]
time = 0.00, antiderivative size = 43, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 15, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.133, Rules used = {47, 37} \begin {gather*} \frac {4 \sqrt {x}}{3 a^2 \sqrt {a+b x}}+\frac {2 \sqrt {x}}{3 a (a+b x)^{3/2}} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[1/(Sqrt[x]*(a + b*x)^(5/2)),x]

[Out]

(2*Sqrt[x])/(3*a*(a + b*x)^(3/2)) + (4*Sqrt[x])/(3*a^2*Sqrt[a + b*x])

Rule 37

Int[((a_.) + (b_.)*(x_))^(m_.)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[(a + b*x)^(m + 1)*((c + d*x)^(n +
1)/((b*c - a*d)*(m + 1))), x] /; FreeQ[{a, b, c, d, m, n}, x] && NeQ[b*c - a*d, 0] && EqQ[m + n + 2, 0] && NeQ
[m, -1]

Rule 47

Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_), x_Symbol] :> Simp[(a + b*x)^(m + 1)*((c + d*x)^(n + 1
)/((b*c - a*d)*(m + 1))), x] - Dist[d*(Simplify[m + n + 2]/((b*c - a*d)*(m + 1))), Int[(a + b*x)^Simplify[m +
1]*(c + d*x)^n, x], x] /; FreeQ[{a, b, c, d, m, n}, x] && NeQ[b*c - a*d, 0] && ILtQ[Simplify[m + n + 2], 0] &&
NeQ[m, -1] &&  !(LtQ[m, -1] && LtQ[n, -1] && (EqQ[a, 0] || (NeQ[c, 0] && LtQ[m - n, 0] && IntegerQ[n]))) && (
SumSimplerQ[m, 1] ||  !SumSimplerQ[n, 1])

Rubi steps

\begin {align*} \int \frac {1}{\sqrt {x} (a+b x)^{5/2}} \, dx &=\frac {2 \sqrt {x}}{3 a (a+b x)^{3/2}}+\frac {2 \int \frac {1}{\sqrt {x} (a+b x)^{3/2}} \, dx}{3 a}\\ &=\frac {2 \sqrt {x}}{3 a (a+b x)^{3/2}}+\frac {4 \sqrt {x}}{3 a^2 \sqrt {a+b x}}\\ \end {align*}

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Mathematica [A]
time = 0.07, size = 29, normalized size = 0.67 \begin {gather*} \frac {2 \sqrt {x} (3 a+2 b x)}{3 a^2 (a+b x)^{3/2}} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[1/(Sqrt[x]*(a + b*x)^(5/2)),x]

[Out]

(2*Sqrt[x]*(3*a + 2*b*x))/(3*a^2*(a + b*x)^(3/2))

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Maple [A]
time = 0.12, size = 32, normalized size = 0.74

method	result	size
gosper	\(\frac {2 \sqrt {x}\, \left (2 b x +3 a \right )}{3 \left (b x +a \right )^{\frac {3}{2}} a^{2}}\)	\(24\)
default	\(\frac {2 \sqrt {x}}{3 a \left (b x +a \right )^{\frac {3}{2}}}+\frac {4 \sqrt {x}}{3 a^{2} \sqrt {b x +a}}\)	\(32\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/(b*x+a)^(5/2)/x^(1/2),x,method=_RETURNVERBOSE)

[Out]

2/3*x^(1/2)/a/(b*x+a)^(3/2)+4/3*x^(1/2)/a^2/(b*x+a)^(1/2)

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Maxima [A]
time = 0.29, size = 27, normalized size = 0.63 \begin {gather*} -\frac {2 \, {\left (b - \frac {3 \, {\left (b x + a\right )}}{x}\right )} x^{\frac {3}{2}}}{3 \, {\left (b x + a\right )}^{\frac {3}{2}} a^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(b*x+a)^(5/2)/x^(1/2),x, algorithm="maxima")

[Out]

-2/3*(b - 3*(b*x + a)/x)*x^(3/2)/((b*x + a)^(3/2)*a^2)

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Fricas [A]
time = 0.77, size = 43, normalized size = 1.00 \begin {gather*} \frac {2 \, {\left (2 \, b x + 3 \, a\right )} \sqrt {b x + a} \sqrt {x}}{3 \, {\left (a^{2} b^{2} x^{2} + 2 \, a^{3} b x + a^{4}\right )}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(b*x+a)^(5/2)/x^(1/2),x, algorithm="fricas")

[Out]

2/3*(2*b*x + 3*a)*sqrt(b*x + a)*sqrt(x)/(a^2*b^2*x^2 + 2*a^3*b*x + a^4)

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Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 92 vs. \(2 (37) = 74\).
time = 0.97, size = 92, normalized size = 2.14 \begin {gather*} \frac {6 a}{3 a^{3} \sqrt {b} \sqrt {\frac {a}{b x} + 1} + 3 a^{2} b^{\frac {3}{2}} x \sqrt {\frac {a}{b x} + 1}} + \frac {4 b x}{3 a^{3} \sqrt {b} \sqrt {\frac {a}{b x} + 1} + 3 a^{2} b^{\frac {3}{2}} x \sqrt {\frac {a}{b x} + 1}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(b*x+a)**(5/2)/x**(1/2),x)

[Out]

6*a/(3*a**3*sqrt(b)*sqrt(a/(b*x) + 1) + 3*a**2*b**(3/2)*x*sqrt(a/(b*x) + 1)) + 4*b*x/(3*a**3*sqrt(b)*sqrt(a/(b
*x) + 1) + 3*a**2*b**(3/2)*x*sqrt(a/(b*x) + 1))

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Giac [B] Leaf count of result is larger than twice the leaf count of optimal. 81 vs. \(2 (31) = 62\).
time = 1.67, size = 81, normalized size = 1.88 \begin {gather*} \frac {8 \, {\left (3 \, {\left (\sqrt {b x + a} \sqrt {b} - \sqrt {{\left (b x + a\right )} b - a b}\right )}^{2} + a b\right )} b^{\frac {5}{2}}}{3 \, {\left ({\left (\sqrt {b x + a} \sqrt {b} - \sqrt {{\left (b x + a\right )} b - a b}\right )}^{2} + a b\right )}^{3} {\left | b \right |}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(1/(b*x+a)^(5/2)/x^(1/2),x, algorithm="giac")

[Out]

8/3*(3*(sqrt(b*x + a)*sqrt(b) - sqrt((b*x + a)*b - a*b))^2 + a*b)*b^(5/2)/(((sqrt(b*x + a)*sqrt(b) - sqrt((b*x
+ a)*b - a*b))^2 + a*b)^3*abs(b))

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Mupad [B]
time = 0.40, size = 54, normalized size = 1.26 \begin {gather*} \frac {6\,a\,\sqrt {x}\,\sqrt {a+b\,x}+4\,b\,x^{3/2}\,\sqrt {a+b\,x}}{3\,a^4+6\,a^3\,b\,x+3\,a^2\,b^2\,x^2} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(1/(x^(1/2)*(a + b*x)^(5/2)),x)

[Out]

(6*a*x^(1/2)*(a + b*x)^(1/2) + 4*b*x^(3/2)*(a + b*x)^(1/2))/(3*a^4 + 3*a^2*b^2*x^2 + 6*a^3*b*x)

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