3.37 \(\int \frac {\sec (e+f x) (c-c \sec (e+f x))}{a+a \sec (e+f x)} \, dx\)

Optimal. Leaf size=41 \[ \frac {2 c \tan (e+f x)}{f (a \sec (e+f x)+a)}-\frac {c \tanh ^{-1}(\sin (e+f x))}{a f} \]

[Out]

-c*arctanh(sin(f*x+e))/a/f+2*c*tan(f*x+e)/f/(a+a*sec(f*x+e))

________________________________________________________________________________________

Rubi [A]  time = 0.05, antiderivative size = 41, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, integrand size = 30, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.067, Rules used = {3957, 3770} \[ \frac {2 c \tan (e+f x)}{f (a \sec (e+f x)+a)}-\frac {c \tanh ^{-1}(\sin (e+f x))}{a f} \]

Antiderivative was successfully verified.

[In]

Int[(Sec[e + f*x]*(c - c*Sec[e + f*x]))/(a + a*Sec[e + f*x]),x]

[Out]

-((c*ArcTanh[Sin[e + f*x]])/(a*f)) + (2*c*Tan[e + f*x])/(f*(a + a*Sec[e + f*x]))

Rule 3770

Int[csc[(c_.) + (d_.)*(x_)], x_Symbol] :> -Simp[ArcTanh[Cos[c + d*x]]/d, x] /; FreeQ[{c, d}, x]

Rule 3957

Int[csc[(e_.) + (f_.)*(x_)]*(csc[(e_.) + (f_.)*(x_)]*(b_.) + (a_))^(m_)*(csc[(e_.) + (f_.)*(x_)]*(d_.) + (c_))
^(n_.), x_Symbol] :> Simp[(2*a*c*Cot[e + f*x]*(a + b*Csc[e + f*x])^m*(c + d*Csc[e + f*x])^(n - 1))/(b*f*(2*m +
1)), x] - Dist[(d*(2*n - 1))/(b*(2*m + 1)), Int[Csc[e + f*x]*(a + b*Csc[e + f*x])^(m + 1)*(c + d*Csc[e + f*x]
)^(n - 1), x], x] /; FreeQ[{a, b, c, d, e, f}, x] && EqQ[b*c + a*d, 0] && EqQ[a^2 - b^2, 0] && IGtQ[n, 0] && L
tQ[m, -2^(-1)] && IntegerQ[2*m]

Rubi steps

\begin {align*} \int \frac {\sec (e+f x) (c-c \sec (e+f x))}{a+a \sec (e+f x)} \, dx &=\frac {2 c \tan (e+f x)}{f (a+a \sec (e+f x))}-\frac {c \int \sec (e+f x) \, dx}{a}\\ &=-\frac {c \tanh ^{-1}(\sin (e+f x))}{a f}+\frac {2 c \tan (e+f x)}{f (a+a \sec (e+f x))}\\ \end {align*}

________________________________________________________________________________________

Mathematica [A]  time = 0.06, size = 77, normalized size = 1.88 \[ -\frac {c \left (-\frac {2 \tan \left (\frac {1}{2} (e+f x)\right )}{f}-\frac {\log \left (\cos \left (\frac {1}{2} (e+f x)\right )-\sin \left (\frac {1}{2} (e+f x)\right )\right )}{f}+\frac {\log \left (\sin \left (\frac {1}{2} (e+f x)\right )+\cos \left (\frac {1}{2} (e+f x)\right )\right )}{f}\right )}{a} \]

Antiderivative was successfully verified.

[In]

Integrate[(Sec[e + f*x]*(c - c*Sec[e + f*x]))/(a + a*Sec[e + f*x]),x]

[Out]

-((c*(-(Log[Cos[(e + f*x)/2] - Sin[(e + f*x)/2]]/f) + Log[Cos[(e + f*x)/2] + Sin[(e + f*x)/2]]/f - (2*Tan[(e +
f*x)/2])/f))/a)

________________________________________________________________________________________

fricas [A]  time = 0.45, size = 70, normalized size = 1.71 \[ -\frac {{\left (c \cos \left (f x + e\right ) + c\right )} \log \left (\sin \left (f x + e\right ) + 1\right ) - {\left (c \cos \left (f x + e\right ) + c\right )} \log \left (-\sin \left (f x + e\right ) + 1\right ) - 4 \, c \sin \left (f x + e\right )}{2 \, {\left (a f \cos \left (f x + e\right ) + a f\right )}} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sec(f*x+e)*(c-c*sec(f*x+e))/(a+a*sec(f*x+e)),x, algorithm="fricas")

[Out]

-1/2*((c*cos(f*x + e) + c)*log(sin(f*x + e) + 1) - (c*cos(f*x + e) + c)*log(-sin(f*x + e) + 1) - 4*c*sin(f*x +
e))/(a*f*cos(f*x + e) + a*f)

________________________________________________________________________________________

giac [F(-2)]  time = 0.00, size = 0, normalized size = 0.00 \[ \text {Exception raised: NotImplementedError} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sec(f*x+e)*(c-c*sec(f*x+e))/(a+a*sec(f*x+e)),x, algorithm="giac")

[Out]

Exception raised: NotImplementedError >> Unable to parse Giac output: Unable to check sign: (4*pi/x/2)>(-4*pi/
x/2)Unable to check sign: (4*pi/x/2)>(-4*pi/x/2)-2/f*(-c*1/2/a*ln(abs(tan((f*x+exp(1))/2)-1))+c*1/2/a*ln(abs(t
an((f*x+exp(1))/2)+1))-tan((f*x+exp(1))/2)*c/a)

________________________________________________________________________________________

maple [A]  time = 0.78, size = 61, normalized size = 1.49 \[ \frac {2 c \tan \left (\frac {e}{2}+\frac {f x}{2}\right )}{f a}+\frac {c \ln \left (\tan \left (\frac {e}{2}+\frac {f x}{2}\right )-1\right )}{f a}-\frac {c \ln \left (\tan \left (\frac {e}{2}+\frac {f x}{2}\right )+1\right )}{f a} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int(sec(f*x+e)*(c-c*sec(f*x+e))/(a+a*sec(f*x+e)),x)

[Out]

2/f/a*c*tan(1/2*e+1/2*f*x)+1/f/a*c*ln(tan(1/2*e+1/2*f*x)-1)-1/f/a*c*ln(tan(1/2*e+1/2*f*x)+1)

________________________________________________________________________________________

maxima [B]  time = 0.33, size = 101, normalized size = 2.46 \[ -\frac {c {\left (\frac {\log \left (\frac {\sin \left (f x + e\right )}{\cos \left (f x + e\right ) + 1} + 1\right )}{a} - \frac {\log \left (\frac {\sin \left (f x + e\right )}{\cos \left (f x + e\right ) + 1} - 1\right )}{a} - \frac {\sin \left (f x + e\right )}{a {\left (\cos \left (f x + e\right ) + 1\right )}}\right )} - \frac {c \sin \left (f x + e\right )}{a {\left (\cos \left (f x + e\right ) + 1\right )}}}{f} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sec(f*x+e)*(c-c*sec(f*x+e))/(a+a*sec(f*x+e)),x, algorithm="maxima")

[Out]

-(c*(log(sin(f*x + e)/(cos(f*x + e) + 1) + 1)/a - log(sin(f*x + e)/(cos(f*x + e) + 1) - 1)/a - sin(f*x + e)/(a
*(cos(f*x + e) + 1))) - c*sin(f*x + e)/(a*(cos(f*x + e) + 1)))/f

________________________________________________________________________________________

mupad [B]  time = 1.58, size = 31, normalized size = 0.76 \[ -\frac {2\,c\,\left (\mathrm {atanh}\left (\mathrm {tan}\left (\frac {e}{2}+\frac {f\,x}{2}\right )\right )-\mathrm {tan}\left (\frac {e}{2}+\frac {f\,x}{2}\right )\right )}{a\,f} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((c - c/cos(e + f*x))/(cos(e + f*x)*(a + a/cos(e + f*x))),x)

[Out]

-(2*c*(atanh(tan(e/2 + (f*x)/2)) - tan(e/2 + (f*x)/2)))/(a*f)

________________________________________________________________________________________

sympy [F]  time = 0.00, size = 0, normalized size = 0.00 \[ - \frac {c \left (\int \left (- \frac {\sec {\left (e + f x \right )}}{\sec {\left (e + f x \right )} + 1}\right )\, dx + \int \frac {\sec ^{2}{\left (e + f x \right )}}{\sec {\left (e + f x \right )} + 1}\, dx\right )}{a} \]

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate(sec(f*x+e)*(c-c*sec(f*x+e))/(a+a*sec(f*x+e)),x)

[Out]

-c*(Integral(-sec(e + f*x)/(sec(e + f*x) + 1), x) + Integral(sec(e + f*x)**2/(sec(e + f*x) + 1), x))/a

________________________________________________________________________________________