Optimal. Leaf size=111 \[ \frac {15 \sqrt {\frac {\pi }{2}} C\left (\sqrt {\frac {2}{\pi }} \sqrt {\cos ^{-1}(a+b x)}\right )}{4 b}+\frac {(a+b x) \cos ^{-1}(a+b x)^{5/2}}{b}-\frac {5 \sqrt {1-(a+b x)^2} \cos ^{-1}(a+b x)^{3/2}}{2 b}-\frac {15 (a+b x) \sqrt {\cos ^{-1}(a+b x)}}{4 b} \]
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Rubi [A] time = 0.15, antiderivative size = 111, normalized size of antiderivative = 1.00, number of steps used = 7, number of rules used = 6, integrand size = 10, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.600, Rules used = {4804, 4620, 4678, 4724, 3304, 3352} \[ \frac {15 \sqrt {\frac {\pi }{2}} \text {FresnelC}\left (\sqrt {\frac {2}{\pi }} \sqrt {\cos ^{-1}(a+b x)}\right )}{4 b}+\frac {(a+b x) \cos ^{-1}(a+b x)^{5/2}}{b}-\frac {5 \sqrt {1-(a+b x)^2} \cos ^{-1}(a+b x)^{3/2}}{2 b}-\frac {15 (a+b x) \sqrt {\cos ^{-1}(a+b x)}}{4 b} \]
Antiderivative was successfully verified.
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Rule 3304
Rule 3352
Rule 4620
Rule 4678
Rule 4724
Rule 4804
Rubi steps
\begin {align*} \int \cos ^{-1}(a+b x)^{5/2} \, dx &=\frac {\operatorname {Subst}\left (\int \cos ^{-1}(x)^{5/2} \, dx,x,a+b x\right )}{b}\\ &=\frac {(a+b x) \cos ^{-1}(a+b x)^{5/2}}{b}+\frac {5 \operatorname {Subst}\left (\int \frac {x \cos ^{-1}(x)^{3/2}}{\sqrt {1-x^2}} \, dx,x,a+b x\right )}{2 b}\\ &=-\frac {5 \sqrt {1-(a+b x)^2} \cos ^{-1}(a+b x)^{3/2}}{2 b}+\frac {(a+b x) \cos ^{-1}(a+b x)^{5/2}}{b}-\frac {15 \operatorname {Subst}\left (\int \sqrt {\cos ^{-1}(x)} \, dx,x,a+b x\right )}{4 b}\\ &=-\frac {15 (a+b x) \sqrt {\cos ^{-1}(a+b x)}}{4 b}-\frac {5 \sqrt {1-(a+b x)^2} \cos ^{-1}(a+b x)^{3/2}}{2 b}+\frac {(a+b x) \cos ^{-1}(a+b x)^{5/2}}{b}-\frac {15 \operatorname {Subst}\left (\int \frac {x}{\sqrt {1-x^2} \sqrt {\cos ^{-1}(x)}} \, dx,x,a+b x\right )}{8 b}\\ &=-\frac {15 (a+b x) \sqrt {\cos ^{-1}(a+b x)}}{4 b}-\frac {5 \sqrt {1-(a+b x)^2} \cos ^{-1}(a+b x)^{3/2}}{2 b}+\frac {(a+b x) \cos ^{-1}(a+b x)^{5/2}}{b}+\frac {15 \operatorname {Subst}\left (\int \frac {\cos (x)}{\sqrt {x}} \, dx,x,\cos ^{-1}(a+b x)\right )}{8 b}\\ &=-\frac {15 (a+b x) \sqrt {\cos ^{-1}(a+b x)}}{4 b}-\frac {5 \sqrt {1-(a+b x)^2} \cos ^{-1}(a+b x)^{3/2}}{2 b}+\frac {(a+b x) \cos ^{-1}(a+b x)^{5/2}}{b}+\frac {15 \operatorname {Subst}\left (\int \cos \left (x^2\right ) \, dx,x,\sqrt {\cos ^{-1}(a+b x)}\right )}{4 b}\\ &=-\frac {15 (a+b x) \sqrt {\cos ^{-1}(a+b x)}}{4 b}-\frac {5 \sqrt {1-(a+b x)^2} \cos ^{-1}(a+b x)^{3/2}}{2 b}+\frac {(a+b x) \cos ^{-1}(a+b x)^{5/2}}{b}+\frac {15 \sqrt {\frac {\pi }{2}} C\left (\sqrt {\frac {2}{\pi }} \sqrt {\cos ^{-1}(a+b x)}\right )}{4 b}\\ \end {align*}
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Mathematica [C] time = 0.05, size = 90, normalized size = 0.81 \[ -\frac {\frac {\sqrt {\cos ^{-1}(a+b x)} \Gamma \left (\frac {7}{2},-i \cos ^{-1}(a+b x)\right )}{2 \sqrt {-i \cos ^{-1}(a+b x)}}+\frac {\sqrt {\cos ^{-1}(a+b x)} \Gamma \left (\frac {7}{2},i \cos ^{-1}(a+b x)\right )}{2 \sqrt {i \cos ^{-1}(a+b x)}}}{b} \]
Warning: Unable to verify antiderivative.
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fricas [F(-2)] time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: TypeError} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [B] time = 0.46, size = 209, normalized size = 1.88 \[ \frac {5 \, i \arccos \left (b x + a\right )^{\frac {3}{2}} e^{\left (i \arccos \left (b x + a\right )\right )}}{4 \, b} + \frac {\arccos \left (b x + a\right )^{\frac {5}{2}} e^{\left (i \arccos \left (b x + a\right )\right )}}{2 \, b} - \frac {5 \, i \arccos \left (b x + a\right )^{\frac {3}{2}} e^{\left (-i \arccos \left (b x + a\right )\right )}}{4 \, b} + \frac {\arccos \left (b x + a\right )^{\frac {5}{2}} e^{\left (-i \arccos \left (b x + a\right )\right )}}{2 \, b} - \frac {15 \, \sqrt {2} \sqrt {\pi } i \operatorname {erf}\left (\frac {\sqrt {2} \sqrt {\arccos \left (b x + a\right )}}{i - 1}\right )}{16 \, b {\left (i - 1\right )}} - \frac {15 \, \sqrt {\arccos \left (b x + a\right )} e^{\left (i \arccos \left (b x + a\right )\right )}}{8 \, b} - \frac {15 \, \sqrt {\arccos \left (b x + a\right )} e^{\left (-i \arccos \left (b x + a\right )\right )}}{8 \, b} + \frac {15 \, \sqrt {2} \sqrt {\pi } \operatorname {erf}\left (-\frac {\sqrt {2} i \sqrt {\arccos \left (b x + a\right )}}{i - 1}\right )}{16 \, b {\left (i - 1\right )}} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.15, size = 140, normalized size = 1.26 \[ -\frac {\sqrt {2}\, \left (-4 \arccos \left (b x +a \right )^{\frac {5}{2}} \sqrt {2}\, \sqrt {\pi }\, x b -4 \arccos \left (b x +a \right )^{\frac {5}{2}} \sqrt {2}\, \sqrt {\pi }\, a +10 \arccos \left (b x +a \right )^{\frac {3}{2}} \sqrt {2}\, \sqrt {\pi }\, \sqrt {-b^{2} x^{2}-2 a b x -a^{2}+1}+15 \sqrt {2}\, \sqrt {\pi }\, \sqrt {\arccos \left (b x +a \right )}\, x b +15 \sqrt {2}\, \sqrt {\pi }\, \sqrt {\arccos \left (b x +a \right )}\, a -15 \pi \FresnelC \left (\frac {\sqrt {2}\, \sqrt {\arccos \left (b x +a \right )}}{\sqrt {\pi }}\right )\right )}{8 b \sqrt {\pi }} \]
Verification of antiderivative is not currently implemented for this CAS.
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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.
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mupad [F] time = 0.00, size = -1, normalized size = -0.01 \[ \int {\mathrm {acos}\left (a+b\,x\right )}^{5/2} \,d x \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [F] time = 0.00, size = 0, normalized size = 0.00 \[ \int \operatorname {acos}^{\frac {5}{2}}{\left (a + b x \right )}\, dx \]
Verification of antiderivative is not currently implemented for this CAS.
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