3.31 \(\int (a-a \sin ^2(x)) \, dx\)

Optimal. Leaf size=16 \[ \frac {a x}{2}+\frac {1}{2} a \sin (x) \cos (x) \]

[Out]

1/2*a*x+1/2*a*cos(x)*sin(x)

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Rubi [A]  time = 0.01, antiderivative size = 16, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 2, integrand size = 9, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.222, Rules used = {2635, 8} \[ \frac {a x}{2}+\frac {1}{2} a \sin (x) \cos (x) \]

Antiderivative was successfully verified.

[In]

Int[a - a*Sin[x]^2,x]

[Out]

(a*x)/2 + (a*Cos[x]*Sin[x])/2

Rule 8

Int[a_, x_Symbol] :> Simp[a*x, x] /; FreeQ[a, x]

Rule 2635

Int[((b_.)*sin[(c_.) + (d_.)*(x_)])^(n_), x_Symbol] :> -Simp[(b*Cos[c + d*x]*(b*Sin[c + d*x])^(n - 1))/(d*n),
x] + Dist[(b^2*(n - 1))/n, Int[(b*Sin[c + d*x])^(n - 2), x], x] /; FreeQ[{b, c, d}, x] && GtQ[n, 1] && Integer
Q[2*n]

Rubi steps

\begin {align*} \int \left (a-a \sin ^2(x)\right ) \, dx &=a x-a \int \sin ^2(x) \, dx\\ &=a x+\frac {1}{2} a \cos (x) \sin (x)-\frac {1}{2} a \int 1 \, dx\\ &=\frac {a x}{2}+\frac {1}{2} a \cos (x) \sin (x)\\ \end {align*}

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Mathematica [A]  time = 0.00, size = 16, normalized size = 1.00 \[ a \left (\frac {x}{2}+\frac {1}{4} \sin (2 x)\right ) \]

Antiderivative was successfully verified.

[In]

Integrate[a - a*Sin[x]^2,x]

[Out]

a*(x/2 + Sin[2*x]/4)

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fricas [A]  time = 0.42, size = 12, normalized size = 0.75 \[ \frac {1}{2} \, a \cos \relax (x) \sin \relax (x) + \frac {1}{2} \, a x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(a-a*sin(x)^2,x, algorithm="fricas")

[Out]

1/2*a*cos(x)*sin(x) + 1/2*a*x

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giac [A]  time = 0.12, size = 17, normalized size = 1.06 \[ -\frac {1}{4} \, a {\left (2 \, x - \sin \left (2 \, x\right )\right )} + a x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(a-a*sin(x)^2,x, algorithm="giac")

[Out]

-1/4*a*(2*x - sin(2*x)) + a*x

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maple [A]  time = 0.07, size = 18, normalized size = 1.12 \[ a x -a \left (-\frac {\sin \relax (x ) \cos \relax (x )}{2}+\frac {x}{2}\right ) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(a-a*sin(x)^2,x)

[Out]

a*x-a*(-1/2*sin(x)*cos(x)+1/2*x)

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maxima [A]  time = 0.32, size = 17, normalized size = 1.06 \[ -\frac {1}{4} \, a {\left (2 \, x - \sin \left (2 \, x\right )\right )} + a x \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(a-a*sin(x)^2,x, algorithm="maxima")

[Out]

-1/4*a*(2*x - sin(2*x)) + a*x

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mupad [B]  time = 13.58, size = 11, normalized size = 0.69 \[ \frac {a\,\left (2\,x+\sin \left (2\,x\right )\right )}{4} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(a - a*sin(x)^2,x)

[Out]

(a*(2*x + sin(2*x)))/4

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sympy [A]  time = 0.10, size = 15, normalized size = 0.94 \[ a x - a \left (\frac {x}{2} - \frac {\sin {\relax (x )} \cos {\relax (x )}}{2}\right ) \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(a-a*sin(x)**2,x)

[Out]

a*x - a*(x/2 - sin(x)*cos(x)/2)

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