3.1.87 \(\int \cos (x) (1+\sin ^2(x))^2 \, dx\) [87]

Optimal. Leaf size=19 \[ \sin (x)+\frac {2 \sin ^3(x)}{3}+\frac {\sin ^5(x)}{5} \]

[Out]

sin(x)+2/3*sin(x)^3+1/5*sin(x)^5

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Rubi [A]
time = 0.02, antiderivative size = 19, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 11, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.182, Rules used = {3269, 200} \begin {gather*} \frac {\sin ^5(x)}{5}+\frac {2 \sin ^3(x)}{3}+\sin (x) \end {gather*}

Antiderivative was successfully verified.

[In]

Int[Cos[x]*(1 + Sin[x]^2)^2,x]

[Out]

Sin[x] + (2*Sin[x]^3)/3 + Sin[x]^5/5

Rule 200

Int[((a_) + (b_.)*(x_)^(n_))^(p_), x_Symbol] :> Int[ExpandIntegrand[(a + b*x^n)^p, x], x] /; FreeQ[{a, b}, x]
&& IGtQ[n, 0] && IGtQ[p, 0]

Rule 3269

Int[cos[(e_.) + (f_.)*(x_)]^(m_.)*((a_) + (b_.)*sin[(e_.) + (f_.)*(x_)]^2)^(p_.), x_Symbol] :> With[{ff = Free
Factors[Sin[e + f*x], x]}, Dist[ff/f, Subst[Int[(1 - ff^2*x^2)^((m - 1)/2)*(a + b*ff^2*x^2)^p, x], x, Sin[e +
f*x]/ff], x]] /; FreeQ[{a, b, e, f, p}, x] && IntegerQ[(m - 1)/2]

Rubi steps

\begin {align*} \int \cos (x) \left (1+\sin ^2(x)\right )^2 \, dx &=\text {Subst}\left (\int \left (1+x^2\right )^2 \, dx,x,\sin (x)\right )\\ &=\text {Subst}\left (\int \left (1+2 x^2+x^4\right ) \, dx,x,\sin (x)\right )\\ &=\sin (x)+\frac {2 \sin ^3(x)}{3}+\frac {\sin ^5(x)}{5}\\ \end {align*}

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Mathematica [A]
time = 0.00, size = 19, normalized size = 1.00 \begin {gather*} \sin (x)+\frac {2 \sin ^3(x)}{3}+\frac {\sin ^5(x)}{5} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[Cos[x]*(1 + Sin[x]^2)^2,x]

[Out]

Sin[x] + (2*Sin[x]^3)/3 + Sin[x]^5/5

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Maple [A]
time = 0.03, size = 16, normalized size = 0.84

method	result	size
derivativedivides	\(\sin \left (x \right )+\frac {2 \left (\sin ^{3}\left (x \right )\right )}{3}+\frac {\left (\sin ^{5}\left (x \right )\right )}{5}\)	\(16\)
default	\(\sin \left (x \right )+\frac {2 \left (\sin ^{3}\left (x \right )\right )}{3}+\frac {\left (\sin ^{5}\left (x \right )\right )}{5}\)	\(16\)
risch	\(\frac {13 \sin \left (x \right )}{8}+\frac {\sin \left (5 x \right )}{80}-\frac {11 \sin \left (3 x \right )}{48}\)	\(18\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cos(x)*(1+sin(x)^2)^2,x,method=_RETURNVERBOSE)

[Out]

sin(x)+2/3*sin(x)^3+1/5*sin(x)^5

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Maxima [A]
time = 1.47, size = 15, normalized size = 0.79 \begin {gather*} \frac {1}{5} \, \sin \left (x\right )^{5} + \frac {2}{3} \, \sin \left (x\right )^{3} + \sin \left (x\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cos(x)*(1+sin(x)^2)^2,x, algorithm="maxima")

[Out]

1/5*sin(x)^5 + 2/3*sin(x)^3 + sin(x)

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Fricas [A]
time = 0.84, size = 18, normalized size = 0.95 \begin {gather*} \frac {1}{15} \, {\left (3 \, \cos \left (x\right )^{4} - 16 \, \cos \left (x\right )^{2} + 28\right )} \sin \left (x\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cos(x)*(1+sin(x)^2)^2,x, algorithm="fricas")

[Out]

1/15*(3*cos(x)^4 - 16*cos(x)^2 + 28)*sin(x)

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Sympy [A]
time = 0.21, size = 17, normalized size = 0.89 \begin {gather*} \frac {\sin ^{5}{\left (x \right )}}{5} + \frac {2 \sin ^{3}{\left (x \right )}}{3} + \sin {\left (x \right )} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cos(x)*(1+sin(x)**2)**2,x)

[Out]

sin(x)**5/5 + 2*sin(x)**3/3 + sin(x)

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Giac [A]
time = 0.68, size = 15, normalized size = 0.79 \begin {gather*} \frac {1}{5} \, \sin \left (x\right )^{5} + \frac {2}{3} \, \sin \left (x\right )^{3} + \sin \left (x\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(cos(x)*(1+sin(x)^2)^2,x, algorithm="giac")

[Out]

1/5*sin(x)^5 + 2/3*sin(x)^3 + sin(x)

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Mupad [B]
time = 0.04, size = 15, normalized size = 0.79 \begin {gather*} \frac {{\sin \left (x\right )}^5}{5}+\frac {2\,{\sin \left (x\right )}^3}{3}+\sin \left (x\right ) \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(cos(x)*(sin(x)^2 + 1)^2,x)

[Out]

sin(x) + (2*sin(x)^3)/3 + sin(x)^5/5

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