Optimal. Leaf size=163 \[ e^x x^{20}-20 e^x x^{19}+380 e^x x^{18}-6840 e^x x^{17}+116280 e^x x^{16}-1860480 e^x x^{15}+27907200 e^x x^{14}-390700800 e^x x^{13}+5079110400 e^x x^{12}-60949324800 e^x x^{11}+670442572800 e^x x^{10}-6704425728000 e^x x^9+60339831552000 e^x x^8-482718652416000 e^x x^7+3379030566912000 e^x x^6-20274183401472000 e^x x^5+101370917007360000 e^x x^4-405483668029440000 e^x x^3+1216451004088320000 e^x x^2-2432902008176640000 e^x x+2432902008176640000 e^x \]
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Rubi [A] time = 0.24, antiderivative size = 163, normalized size of antiderivative = 1.00, number of steps used = 21, number of rules used = 2, integrand size = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.286, Rules used = {2176, 2194} \[ e^x x^{20}-20 e^x x^{19}+380 e^x x^{18}-6840 e^x x^{17}+116280 e^x x^{16}-1860480 e^x x^{15}+27907200 e^x x^{14}-390700800 e^x x^{13}+5079110400 e^x x^{12}-60949324800 e^x x^{11}+670442572800 e^x x^{10}-6704425728000 e^x x^9+60339831552000 e^x x^8-482718652416000 e^x x^7+3379030566912000 e^x x^6-20274183401472000 e^x x^5+101370917007360000 e^x x^4-405483668029440000 e^x x^3+1216451004088320000 e^x x^2-2432902008176640000 e^x x+2432902008176640000 e^x \]
Antiderivative was successfully verified.
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Rule 2176
Rule 2194
Rubi steps
\begin {align*} \int e^x x^{20} \, dx &=e^x x^{20}-20 \int e^x x^{19} \, dx\\ &=-20 e^x x^{19}+e^x x^{20}+380 \int e^x x^{18} \, dx\\ &=380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-6840 \int e^x x^{17} \, dx\\ &=-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+116280 \int e^x x^{16} \, dx\\ &=116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-1860480 \int e^x x^{15} \, dx\\ &=-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+27907200 \int e^x x^{14} \, dx\\ &=27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-390700800 \int e^x x^{13} \, dx\\ &=-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+5079110400 \int e^x x^{12} \, dx\\ &=5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-60949324800 \int e^x x^{11} \, dx\\ &=-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+670442572800 \int e^x x^{10} \, dx\\ &=670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-6704425728000 \int e^x x^9 \, dx\\ &=-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+60339831552000 \int e^x x^8 \, dx\\ &=60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-482718652416000 \int e^x x^7 \, dx\\ &=-482718652416000 e^x x^7+60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+3379030566912000 \int e^x x^6 \, dx\\ &=3379030566912000 e^x x^6-482718652416000 e^x x^7+60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-20274183401472000 \int e^x x^5 \, dx\\ &=-20274183401472000 e^x x^5+3379030566912000 e^x x^6-482718652416000 e^x x^7+60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+101370917007360000 \int e^x x^4 \, dx\\ &=101370917007360000 e^x x^4-20274183401472000 e^x x^5+3379030566912000 e^x x^6-482718652416000 e^x x^7+60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-405483668029440000 \int e^x x^3 \, dx\\ &=-405483668029440000 e^x x^3+101370917007360000 e^x x^4-20274183401472000 e^x x^5+3379030566912000 e^x x^6-482718652416000 e^x x^7+60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+1216451004088320000 \int e^x x^2 \, dx\\ &=1216451004088320000 e^x x^2-405483668029440000 e^x x^3+101370917007360000 e^x x^4-20274183401472000 e^x x^5+3379030566912000 e^x x^6-482718652416000 e^x x^7+60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}-2432902008176640000 \int e^x x \, dx\\ &=-2432902008176640000 e^x x+1216451004088320000 e^x x^2-405483668029440000 e^x x^3+101370917007360000 e^x x^4-20274183401472000 e^x x^5+3379030566912000 e^x x^6-482718652416000 e^x x^7+60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}+2432902008176640000 \int e^x \, dx\\ &=2432902008176640000 e^x-2432902008176640000 e^x x+1216451004088320000 e^x x^2-405483668029440000 e^x x^3+101370917007360000 e^x x^4-20274183401472000 e^x x^5+3379030566912000 e^x x^6-482718652416000 e^x x^7+60339831552000 e^x x^8-6704425728000 e^x x^9+670442572800 e^x x^{10}-60949324800 e^x x^{11}+5079110400 e^x x^{12}-390700800 e^x x^{13}+27907200 e^x x^{14}-1860480 e^x x^{15}+116280 e^x x^{16}-6840 e^x x^{17}+380 e^x x^{18}-20 e^x x^{19}+e^x x^{20}\\ \end {align*}
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Mathematica [A] time = 0.01, size = 102, normalized size = 0.63 \[ e^x \left (x^{20}-20 x^{19}+380 x^{18}-6840 x^{17}+116280 x^{16}-1860480 x^{15}+27907200 x^{14}-390700800 x^{13}+5079110400 x^{12}-60949324800 x^{11}+670442572800 x^{10}-6704425728000 x^9+60339831552000 x^8-482718652416000 x^7+3379030566912000 x^6-20274183401472000 x^5+101370917007360000 x^4-405483668029440000 x^3+1216451004088320000 x^2-2432902008176640000 x+2432902008176640000\right ) \]
Antiderivative was successfully verified.
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fricas [A] time = 0.42, size = 101, normalized size = 0.62 \[ {\left (x^{20} - 20 \, x^{19} + 380 \, x^{18} - 6840 \, x^{17} + 116280 \, x^{16} - 1860480 \, x^{15} + 27907200 \, x^{14} - 390700800 \, x^{13} + 5079110400 \, x^{12} - 60949324800 \, x^{11} + 670442572800 \, x^{10} - 6704425728000 \, x^{9} + 60339831552000 \, x^{8} - 482718652416000 \, x^{7} + 3379030566912000 \, x^{6} - 20274183401472000 \, x^{5} + 101370917007360000 \, x^{4} - 405483668029440000 \, x^{3} + 1216451004088320000 \, x^{2} - 2432902008176640000 \, x + 2432902008176640000\right )} e^{x} \]
Verification of antiderivative is not currently implemented for this CAS.
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giac [A] time = 1.21, size = 101, normalized size = 0.62 \[ {\left (x^{20} - 20 \, x^{19} + 380 \, x^{18} - 6840 \, x^{17} + 116280 \, x^{16} - 1860480 \, x^{15} + 27907200 \, x^{14} - 390700800 \, x^{13} + 5079110400 \, x^{12} - 60949324800 \, x^{11} + 670442572800 \, x^{10} - 6704425728000 \, x^{9} + 60339831552000 \, x^{8} - 482718652416000 \, x^{7} + 3379030566912000 \, x^{6} - 20274183401472000 \, x^{5} + 101370917007360000 \, x^{4} - 405483668029440000 \, x^{3} + 1216451004088320000 \, x^{2} - 2432902008176640000 \, x + 2432902008176640000\right )} e^{x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maple [A] time = 0.00, size = 102, normalized size = 0.63 \[ \left (x^{20}-20 x^{19}+380 x^{18}-6840 x^{17}+116280 x^{16}-1860480 x^{15}+27907200 x^{14}-390700800 x^{13}+5079110400 x^{12}-60949324800 x^{11}+670442572800 x^{10}-6704425728000 x^{9}+60339831552000 x^{8}-482718652416000 x^{7}+3379030566912000 x^{6}-20274183401472000 x^{5}+101370917007360000 x^{4}-405483668029440000 x^{3}+1216451004088320000 x^{2}-2432902008176640000 x +2432902008176640000\right ) {\mathrm e}^{x} \]
Verification of antiderivative is not currently implemented for this CAS.
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maxima [A] time = 0.42, size = 101, normalized size = 0.62 \[ {\left (x^{20} - 20 \, x^{19} + 380 \, x^{18} - 6840 \, x^{17} + 116280 \, x^{16} - 1860480 \, x^{15} + 27907200 \, x^{14} - 390700800 \, x^{13} + 5079110400 \, x^{12} - 60949324800 \, x^{11} + 670442572800 \, x^{10} - 6704425728000 \, x^{9} + 60339831552000 \, x^{8} - 482718652416000 \, x^{7} + 3379030566912000 \, x^{6} - 20274183401472000 \, x^{5} + 101370917007360000 \, x^{4} - 405483668029440000 \, x^{3} + 1216451004088320000 \, x^{2} - 2432902008176640000 \, x + 2432902008176640000\right )} e^{x} \]
Verification of antiderivative is not currently implemented for this CAS.
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mupad [B] time = 0.36, size = 101, normalized size = 0.62 \[ {\mathrm {e}}^x\,\left (x^{20}-20\,x^{19}+380\,x^{18}-6840\,x^{17}+116280\,x^{16}-1860480\,x^{15}+27907200\,x^{14}-390700800\,x^{13}+5079110400\,x^{12}-60949324800\,x^{11}+670442572800\,x^{10}-6704425728000\,x^9+60339831552000\,x^8-482718652416000\,x^7+3379030566912000\,x^6-20274183401472000\,x^5+101370917007360000\,x^4-405483668029440000\,x^3+1216451004088320000\,x^2-2432902008176640000\,x+2432902008176640000\right ) \]
Verification of antiderivative is not currently implemented for this CAS.
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sympy [A] time = 0.13, size = 102, normalized size = 0.63 \[ \left (x^{20} - 20 x^{19} + 380 x^{18} - 6840 x^{17} + 116280 x^{16} - 1860480 x^{15} + 27907200 x^{14} - 390700800 x^{13} + 5079110400 x^{12} - 60949324800 x^{11} + 670442572800 x^{10} - 6704425728000 x^{9} + 60339831552000 x^{8} - 482718652416000 x^{7} + 3379030566912000 x^{6} - 20274183401472000 x^{5} + 101370917007360000 x^{4} - 405483668029440000 x^{3} + 1216451004088320000 x^{2} - 2432902008176640000 x + 2432902008176640000\right ) e^{x} \]
Verification of antiderivative is not currently implemented for this CAS.
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