3.73 \(\int (a+b \cos ^{-1}(1+d x^2))^4 \, dx\)

Optimal. Leaf size=127 \[ \frac {192 b^3 \sqrt {-d^2 x^4-2 d x^2} \left (a+b \cos ^{-1}\left (d x^2+1\right )\right )}{d x}-48 b^2 x \left (a+b \cos ^{-1}\left (d x^2+1\right )\right )^2-\frac {8 b \sqrt {-d^2 x^4-2 d x^2} \left (a+b \cos ^{-1}\left (d x^2+1\right )\right )^3}{d x}+x \left (a+b \cos ^{-1}\left (d x^2+1\right )\right )^4+384 b^4 x \]

[Out]

384*b^4*x-48*b^2*x*(a+b*arccos(d*x^2+1))^2+x*(a+b*arccos(d*x^2+1))^4+192*b^3*(a+b*arccos(d*x^2+1))*(-d^2*x^4-2
*d*x^2)^(1/2)/d/x-8*b*(a+b*arccos(d*x^2+1))^3*(-d^2*x^4-2*d*x^2)^(1/2)/d/x

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Rubi [A]  time = 0.03, antiderivative size = 127, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 14, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.143, Rules used = {4815, 8} \[ \frac {192 b^3 \sqrt {-d^2 x^4-2 d x^2} \left (a+b \cos ^{-1}\left (d x^2+1\right )\right )}{d x}-48 b^2 x \left (a+b \cos ^{-1}\left (d x^2+1\right )\right )^2-\frac {8 b \sqrt {-d^2 x^4-2 d x^2} \left (a+b \cos ^{-1}\left (d x^2+1\right )\right )^3}{d x}+x \left (a+b \cos ^{-1}\left (d x^2+1\right )\right )^4+384 b^4 x \]

Antiderivative was successfully verified.

[In]

Int[(a + b*ArcCos[1 + d*x^2])^4,x]

[Out]

384*b^4*x + (192*b^3*Sqrt[-2*d*x^2 - d^2*x^4]*(a + b*ArcCos[1 + d*x^2]))/(d*x) - 48*b^2*x*(a + b*ArcCos[1 + d*
x^2])^2 - (8*b*Sqrt[-2*d*x^2 - d^2*x^4]*(a + b*ArcCos[1 + d*x^2])^3)/(d*x) + x*(a + b*ArcCos[1 + d*x^2])^4

Rule 8

Int[a_, x_Symbol] :> Simp[a*x, x] /; FreeQ[a, x]

Rule 4815

Int[((a_.) + ArcCos[(c_) + (d_.)*(x_)^2]*(b_.))^(n_), x_Symbol] :> Simp[x*(a + b*ArcCos[c + d*x^2])^n, x] + (-
Dist[4*b^2*n*(n - 1), Int[(a + b*ArcCos[c + d*x^2])^(n - 2), x], x] - Simp[(2*b*n*Sqrt[-2*c*d*x^2 - d^2*x^4]*(
a + b*ArcCos[c + d*x^2])^(n - 1))/(d*x), x]) /; FreeQ[{a, b, c, d}, x] && EqQ[c^2, 1] && GtQ[n, 1]

Rubi steps

\begin {align*} \int \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^4 \, dx &=-\frac {8 b \sqrt {-2 d x^2-d^2 x^4} \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^3}{d x}+x \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^4-\left (48 b^2\right ) \int \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^2 \, dx\\ &=\frac {192 b^3 \sqrt {-2 d x^2-d^2 x^4} \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )}{d x}-48 b^2 x \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^2-\frac {8 b \sqrt {-2 d x^2-d^2 x^4} \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^3}{d x}+x \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^4+\left (384 b^4\right ) \int 1 \, dx\\ &=384 b^4 x+\frac {192 b^3 \sqrt {-2 d x^2-d^2 x^4} \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )}{d x}-48 b^2 x \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^2-\frac {8 b \sqrt {-2 d x^2-d^2 x^4} \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^3}{d x}+x \left (a+b \cos ^{-1}\left (1+d x^2\right )\right )^4\\ \end {align*}

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Mathematica [A]  time = 0.25, size = 249, normalized size = 1.96 \[ \frac {-8 a b \left (a^2-24 b^2\right ) \sqrt {-d x^2 \left (d x^2+2\right )}+6 b^2 \cos ^{-1}\left (d x^2+1\right )^2 \left (a^2 d x^2-4 a b \sqrt {-d x^2 \left (d x^2+2\right )}-8 b^2 d x^2\right )+d x^2 \left (a^4-48 a^2 b^2+384 b^4\right )+4 b \cos ^{-1}\left (d x^2+1\right ) \left (a^3 d x^2-6 a^2 b \sqrt {-d x^2 \left (d x^2+2\right )}-24 a b^2 d x^2+48 b^3 \sqrt {-d x^2 \left (d x^2+2\right )}\right )+4 b^3 \cos ^{-1}\left (d x^2+1\right )^3 \left (a d x^2-2 b \sqrt {-d x^2 \left (d x^2+2\right )}\right )+b^4 d x^2 \cos ^{-1}\left (d x^2+1\right )^4}{d x} \]

Antiderivative was successfully verified.

[In]

Integrate[(a + b*ArcCos[1 + d*x^2])^4,x]

[Out]

((a^4 - 48*a^2*b^2 + 384*b^4)*d*x^2 - 8*a*b*(a^2 - 24*b^2)*Sqrt[-(d*x^2*(2 + d*x^2))] + 4*b*(a^3*d*x^2 - 24*a*
b^2*d*x^2 - 6*a^2*b*Sqrt[-(d*x^2*(2 + d*x^2))] + 48*b^3*Sqrt[-(d*x^2*(2 + d*x^2))])*ArcCos[1 + d*x^2] + 6*b^2*
(a^2*d*x^2 - 8*b^2*d*x^2 - 4*a*b*Sqrt[-(d*x^2*(2 + d*x^2))])*ArcCos[1 + d*x^2]^2 + 4*b^3*(a*d*x^2 - 2*b*Sqrt[-
(d*x^2*(2 + d*x^2))])*ArcCos[1 + d*x^2]^3 + b^4*d*x^2*ArcCos[1 + d*x^2]^4)/(d*x)

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fricas [A]  time = 0.45, size = 207, normalized size = 1.63 \[ \frac {b^{4} d x^{2} \arccos \left (d x^{2} + 1\right )^{4} + 4 \, a b^{3} d x^{2} \arccos \left (d x^{2} + 1\right )^{3} + 6 \, {\left (a^{2} b^{2} - 8 \, b^{4}\right )} d x^{2} \arccos \left (d x^{2} + 1\right )^{2} + 4 \, {\left (a^{3} b - 24 \, a b^{3}\right )} d x^{2} \arccos \left (d x^{2} + 1\right ) + {\left (a^{4} - 48 \, a^{2} b^{2} + 384 \, b^{4}\right )} d x^{2} - 8 \, {\left (b^{4} \arccos \left (d x^{2} + 1\right )^{3} + 3 \, a b^{3} \arccos \left (d x^{2} + 1\right )^{2} + a^{3} b - 24 \, a b^{3} + 3 \, {\left (a^{2} b^{2} - 8 \, b^{4}\right )} \arccos \left (d x^{2} + 1\right )\right )} \sqrt {-d^{2} x^{4} - 2 \, d x^{2}}}{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*arccos(d*x^2+1))^4,x, algorithm="fricas")

[Out]

(b^4*d*x^2*arccos(d*x^2 + 1)^4 + 4*a*b^3*d*x^2*arccos(d*x^2 + 1)^3 + 6*(a^2*b^2 - 8*b^4)*d*x^2*arccos(d*x^2 +
1)^2 + 4*(a^3*b - 24*a*b^3)*d*x^2*arccos(d*x^2 + 1) + (a^4 - 48*a^2*b^2 + 384*b^4)*d*x^2 - 8*(b^4*arccos(d*x^2
+ 1)^3 + 3*a*b^3*arccos(d*x^2 + 1)^2 + a^3*b - 24*a*b^3 + 3*(a^2*b^2 - 8*b^4)*arccos(d*x^2 + 1))*sqrt(-d^2*x^
4 - 2*d*x^2))/(d*x)

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giac [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int {\left (b \arccos \left (d x^{2} + 1\right ) + a\right )}^{4}\,{d x} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*arccos(d*x^2+1))^4,x, algorithm="giac")

[Out]

integrate((b*arccos(d*x^2 + 1) + a)^4, x)

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maple [F]  time = 0.15, size = 0, normalized size = 0.00 \[ \int \left (a +b \arccos \left (d \,x^{2}+1\right )\right )^{4}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a+b*arccos(d*x^2+1))^4,x)

[Out]

int((a+b*arccos(d*x^2+1))^4,x)

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maxima [F(-2)]  time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: RuntimeError} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*arccos(d*x^2+1))^4,x, algorithm="maxima")

[Out]

Exception raised: RuntimeError >> ECL says: Error executing code in Maxima: sign: argument cannot be imaginary
; found sqrt((-_SAGE_VAR_d*_SAGE_VAR_x^2)-2)

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mupad [F]  time = 0.00, size = -1, normalized size = -0.01 \[ \int {\left (a+b\,\mathrm {acos}\left (d\,x^2+1\right )\right )}^4 \,d x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a + b*acos(d*x^2 + 1))^4,x)

[Out]

int((a + b*acos(d*x^2 + 1))^4, x)

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sympy [F]  time = 0.00, size = 0, normalized size = 0.00 \[ \int \left (a + b \operatorname {acos}{\left (d x^{2} + 1 \right )}\right )^{4}\, dx \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((a+b*acos(d*x**2+1))**4,x)

[Out]

Integral((a + b*acos(d*x**2 + 1))**4, x)

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