Integrand size = 11, antiderivative size = 58 \[ \int \frac {1}{\left (a+c x^2\right )^{7/2}} \, dx=\frac {x}{5 a \left (a+c x^2\right )^{5/2}}+\frac {4 x}{15 a^2 \left (a+c x^2\right )^{3/2}}+\frac {8 x}{15 a^3 \sqrt {a+c x^2}} \]
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Time = 0.01 (sec) , antiderivative size = 58, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.182, Rules used = {198, 197} \[ \int \frac {1}{\left (a+c x^2\right )^{7/2}} \, dx=\frac {8 x}{15 a^3 \sqrt {a+c x^2}}+\frac {4 x}{15 a^2 \left (a+c x^2\right )^{3/2}}+\frac {x}{5 a \left (a+c x^2\right )^{5/2}} \]
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Rule 197
Rule 198
Rubi steps \begin{align*} \text {integral}& = \frac {x}{5 a \left (a+c x^2\right )^{5/2}}+\frac {4 \int \frac {1}{\left (a+c x^2\right )^{5/2}} \, dx}{5 a} \\ & = \frac {x}{5 a \left (a+c x^2\right )^{5/2}}+\frac {4 x}{15 a^2 \left (a+c x^2\right )^{3/2}}+\frac {8 \int \frac {1}{\left (a+c x^2\right )^{3/2}} \, dx}{15 a^2} \\ & = \frac {x}{5 a \left (a+c x^2\right )^{5/2}}+\frac {4 x}{15 a^2 \left (a+c x^2\right )^{3/2}}+\frac {8 x}{15 a^3 \sqrt {a+c x^2}} \\ \end{align*}
Time = 0.10 (sec) , antiderivative size = 40, normalized size of antiderivative = 0.69 \[ \int \frac {1}{\left (a+c x^2\right )^{7/2}} \, dx=\frac {15 a^2 x+20 a c x^3+8 c^2 x^5}{15 a^3 \left (a+c x^2\right )^{5/2}} \]
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Time = 1.98 (sec) , antiderivative size = 37, normalized size of antiderivative = 0.64
method | result | size |
gosper | \(\frac {x \left (8 x^{4} c^{2}+20 a c \,x^{2}+15 a^{2}\right )}{15 \left (c \,x^{2}+a \right )^{\frac {5}{2}} a^{3}}\) | \(37\) |
trager | \(\frac {x \left (8 x^{4} c^{2}+20 a c \,x^{2}+15 a^{2}\right )}{15 \left (c \,x^{2}+a \right )^{\frac {5}{2}} a^{3}}\) | \(37\) |
pseudoelliptic | \(\frac {x \left (8 x^{4} c^{2}+20 a c \,x^{2}+15 a^{2}\right )}{15 \left (c \,x^{2}+a \right )^{\frac {5}{2}} a^{3}}\) | \(37\) |
default | \(\frac {x}{5 a \left (c \,x^{2}+a \right )^{\frac {5}{2}}}+\frac {\frac {4 x}{15 a \left (c \,x^{2}+a \right )^{\frac {3}{2}}}+\frac {8 x}{15 a^{2} \sqrt {c \,x^{2}+a}}}{a}\) | \(53\) |
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Time = 0.29 (sec) , antiderivative size = 69, normalized size of antiderivative = 1.19 \[ \int \frac {1}{\left (a+c x^2\right )^{7/2}} \, dx=\frac {{\left (8 \, c^{2} x^{5} + 20 \, a c x^{3} + 15 \, a^{2} x\right )} \sqrt {c x^{2} + a}}{15 \, {\left (a^{3} c^{3} x^{6} + 3 \, a^{4} c^{2} x^{4} + 3 \, a^{5} c x^{2} + a^{6}\right )}} \]
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Leaf count of result is larger than twice the leaf count of optimal. 413 vs. \(2 (51) = 102\).
Time = 0.80 (sec) , antiderivative size = 413, normalized size of antiderivative = 7.12 \[ \int \frac {1}{\left (a+c x^2\right )^{7/2}} \, dx=\frac {15 a^{5} x}{15 a^{\frac {17}{2}} \sqrt {1 + \frac {c x^{2}}{a}} + 45 a^{\frac {15}{2}} c x^{2} \sqrt {1 + \frac {c x^{2}}{a}} + 45 a^{\frac {13}{2}} c^{2} x^{4} \sqrt {1 + \frac {c x^{2}}{a}} + 15 a^{\frac {11}{2}} c^{3} x^{6} \sqrt {1 + \frac {c x^{2}}{a}}} + \frac {35 a^{4} c x^{3}}{15 a^{\frac {17}{2}} \sqrt {1 + \frac {c x^{2}}{a}} + 45 a^{\frac {15}{2}} c x^{2} \sqrt {1 + \frac {c x^{2}}{a}} + 45 a^{\frac {13}{2}} c^{2} x^{4} \sqrt {1 + \frac {c x^{2}}{a}} + 15 a^{\frac {11}{2}} c^{3} x^{6} \sqrt {1 + \frac {c x^{2}}{a}}} + \frac {28 a^{3} c^{2} x^{5}}{15 a^{\frac {17}{2}} \sqrt {1 + \frac {c x^{2}}{a}} + 45 a^{\frac {15}{2}} c x^{2} \sqrt {1 + \frac {c x^{2}}{a}} + 45 a^{\frac {13}{2}} c^{2} x^{4} \sqrt {1 + \frac {c x^{2}}{a}} + 15 a^{\frac {11}{2}} c^{3} x^{6} \sqrt {1 + \frac {c x^{2}}{a}}} + \frac {8 a^{2} c^{3} x^{7}}{15 a^{\frac {17}{2}} \sqrt {1 + \frac {c x^{2}}{a}} + 45 a^{\frac {15}{2}} c x^{2} \sqrt {1 + \frac {c x^{2}}{a}} + 45 a^{\frac {13}{2}} c^{2} x^{4} \sqrt {1 + \frac {c x^{2}}{a}} + 15 a^{\frac {11}{2}} c^{3} x^{6} \sqrt {1 + \frac {c x^{2}}{a}}} \]
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Time = 0.19 (sec) , antiderivative size = 46, normalized size of antiderivative = 0.79 \[ \int \frac {1}{\left (a+c x^2\right )^{7/2}} \, dx=\frac {8 \, x}{15 \, \sqrt {c x^{2} + a} a^{3}} + \frac {4 \, x}{15 \, {\left (c x^{2} + a\right )}^{\frac {3}{2}} a^{2}} + \frac {x}{5 \, {\left (c x^{2} + a\right )}^{\frac {5}{2}} a} \]
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Time = 0.30 (sec) , antiderivative size = 41, normalized size of antiderivative = 0.71 \[ \int \frac {1}{\left (a+c x^2\right )^{7/2}} \, dx=\frac {{\left (4 \, x^{2} {\left (\frac {2 \, c^{2} x^{2}}{a^{3}} + \frac {5 \, c}{a^{2}}\right )} + \frac {15}{a}\right )} x}{15 \, {\left (c x^{2} + a\right )}^{\frac {5}{2}}} \]
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Time = 9.04 (sec) , antiderivative size = 44, normalized size of antiderivative = 0.76 \[ \int \frac {1}{\left (a+c x^2\right )^{7/2}} \, dx=\frac {8\,x\,{\left (c\,x^2+a\right )}^2+3\,a^2\,x+4\,a\,x\,\left (c\,x^2+a\right )}{15\,a^3\,{\left (c\,x^2+a\right )}^{5/2}} \]
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