Optimal. Leaf size=20 \[ \frac {x}{2 a}-\frac {\cos (x) \sin (x)}{2 a} \]
[Out]
________________________________________________________________________________________
Rubi [A]
time = 0.03, antiderivative size = 20, normalized size of antiderivative = 1.00, number of steps
used = 3, number of rules used = 3, integrand size = 16, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.188, Rules used = {3254, 2715, 8}
\begin {gather*} \frac {x}{2 a}-\frac {\sin (x) \cos (x)}{2 a} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
Rule 8
Rule 2715
Rule 3254
Rubi steps
\begin {align*} \int \frac {\sin ^4(x)}{a-a \cos ^2(x)} \, dx &=\frac {\int \sin ^2(x) \, dx}{a}\\ &=-\frac {\cos (x) \sin (x)}{2 a}+\frac {\int 1 \, dx}{2 a}\\ &=\frac {x}{2 a}-\frac {\cos (x) \sin (x)}{2 a}\\ \end {align*}
________________________________________________________________________________________
Mathematica [A]
time = 0.00, size = 18, normalized size = 0.90 \begin {gather*} \frac {\frac {x}{2}-\frac {1}{4} \sin (2 x)}{a} \end {gather*}
Antiderivative was successfully verified.
[In]
[Out]
________________________________________________________________________________________
Maple [A]
time = 0.06, size = 23, normalized size = 1.15
method | result | size |
risch | \(\frac {x}{2 a}-\frac {\sin \left (2 x \right )}{4 a}\) | \(17\) |
default | \(\frac {-\frac {\tan \left (x \right )}{2 \left (1+\tan ^{2}\left (x \right )\right )}+\frac {\arctan \left (\tan \left (x \right )\right )}{2}}{a}\) | \(23\) |
norman | \(\frac {\frac {\tan ^{6}\left (\frac {x}{2}\right )}{a}+\frac {\tan ^{8}\left (\frac {x}{2}\right )}{a}-\frac {\tan ^{2}\left (\frac {x}{2}\right )}{a}-\frac {\tan ^{4}\left (\frac {x}{2}\right )}{a}+\frac {x \tan \left (\frac {x}{2}\right )}{2 a}+\frac {2 x \left (\tan ^{3}\left (\frac {x}{2}\right )\right )}{a}+\frac {3 x \left (\tan ^{5}\left (\frac {x}{2}\right )\right )}{a}+\frac {2 x \left (\tan ^{7}\left (\frac {x}{2}\right )\right )}{a}+\frac {x \left (\tan ^{9}\left (\frac {x}{2}\right )\right )}{2 a}}{\left (1+\tan ^{2}\left (\frac {x}{2}\right )\right )^{4} \tan \left (\frac {x}{2}\right )}\) | \(119\) |
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Maxima [A]
time = 0.48, size = 21, normalized size = 1.05 \begin {gather*} \frac {x}{2 \, a} - \frac {\tan \left (x\right )}{2 \, {\left (a \tan \left (x\right )^{2} + a\right )}} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Fricas [A]
time = 0.38, size = 14, normalized size = 0.70 \begin {gather*} -\frac {\cos \left (x\right ) \sin \left (x\right ) - x}{2 \, a} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Sympy [B] Leaf count of result is larger than twice the leaf count of optimal. 153 vs.
\(2 (14) = 28\).
time = 0.81, size = 153, normalized size = 7.65 \begin {gather*} \frac {x \tan ^{4}{\left (\frac {x}{2} \right )}}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} + \frac {2 x \tan ^{2}{\left (\frac {x}{2} \right )}}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} + \frac {x}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} + \frac {2 \tan ^{3}{\left (\frac {x}{2} \right )}}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} - \frac {2 \tan {\left (\frac {x}{2} \right )}}{2 a \tan ^{4}{\left (\frac {x}{2} \right )} + 4 a \tan ^{2}{\left (\frac {x}{2} \right )} + 2 a} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Giac [A]
time = 0.43, size = 22, normalized size = 1.10 \begin {gather*} \frac {x}{2 \, a} - \frac {\tan \left (x\right )}{2 \, {\left (\tan \left (x\right )^{2} + 1\right )} a} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________
Mupad [B]
time = 2.04, size = 15, normalized size = 0.75 \begin {gather*} \frac {2\,x-\sin \left (2\,x\right )}{4\,a} \end {gather*}
Verification of antiderivative is not currently implemented for this CAS.
[In]
[Out]
________________________________________________________________________________________