3.14.47 \(\int \frac {a+b x}{(c+d x)^2} \, dx\) [1347]

Optimal. Leaf size=31 \[ \frac {b c-a d}{d^2 (c+d x)}+\frac {b \log (c+d x)}{d^2} \]

[Out]

(-a*d+b*c)/d^2/(d*x+c)+b*ln(d*x+c)/d^2

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Rubi [A]
time = 0.01, antiderivative size = 31, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 1, integrand size = 13, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.077, Rules used = {45} \begin {gather*} \frac {b c-a d}{d^2 (c+d x)}+\frac {b \log (c+d x)}{d^2} \end {gather*}

Antiderivative was successfully verified.

[In]

Int[(a + b*x)/(c + d*x)^2,x]

[Out]

(b*c - a*d)/(d^2*(c + d*x)) + (b*Log[c + d*x])/d^2

Rule 45

Int[((a_.) + (b_.)*(x_))^(m_.)*((c_.) + (d_.)*(x_))^(n_.), x_Symbol] :> Int[ExpandIntegrand[(a + b*x)^m*(c + d
*x)^n, x], x] /; FreeQ[{a, b, c, d, n}, x] && NeQ[b*c - a*d, 0] && IGtQ[m, 0] && ( !IntegerQ[n] || (EqQ[c, 0]
&& LeQ[7*m + 4*n + 4, 0]) || LtQ[9*m + 5*(n + 1), 0] || GtQ[m + n + 2, 0])

Rubi steps

\begin {align*} \int \frac {a+b x}{(c+d x)^2} \, dx &=\int \left (\frac {-b c+a d}{d (c+d x)^2}+\frac {b}{d (c+d x)}\right ) \, dx\\ &=\frac {b c-a d}{d^2 (c+d x)}+\frac {b \log (c+d x)}{d^2}\\ \end {align*}

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Mathematica [A]
time = 0.01, size = 31, normalized size = 1.00 \begin {gather*} \frac {b c-a d}{d^2 (c+d x)}+\frac {b \log (c+d x)}{d^2} \end {gather*}

Antiderivative was successfully verified.

[In]

Integrate[(a + b*x)/(c + d*x)^2,x]

[Out]

(b*c - a*d)/(d^2*(c + d*x)) + (b*Log[c + d*x])/d^2

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Maple [A]
time = 0.12, size = 33, normalized size = 1.06

method	result	size
default	\(-\frac {a d -b c}{d^{2} \left (d x +c \right )}+\frac {b \ln \left (d x +c \right )}{d^{2}}\)	\(33\)
norman	\(-\frac {a d -b c}{d^{2} \left (d x +c \right )}+\frac {b \ln \left (d x +c \right )}{d^{2}}\)	\(33\)
risch	\(-\frac {a}{d \left (d x +c \right )}+\frac {b c}{d^{2} \left (d x +c \right )}+\frac {b \ln \left (d x +c \right )}{d^{2}}\)	\(39\)

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((b*x+a)/(d*x+c)^2,x,method=_RETURNVERBOSE)

[Out]

-(a*d-b*c)/d^2/(d*x+c)+b*ln(d*x+c)/d^2

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Maxima [A]
time = 0.32, size = 34, normalized size = 1.10 \begin {gather*} \frac {b c - a d}{d^{3} x + c d^{2}} + \frac {b \log \left (d x + c\right )}{d^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)/(d*x+c)^2,x, algorithm="maxima")

[Out]

(b*c - a*d)/(d^3*x + c*d^2) + b*log(d*x + c)/d^2

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Fricas [A]
time = 0.83, size = 37, normalized size = 1.19 \begin {gather*} \frac {b c - a d + {\left (b d x + b c\right )} \log \left (d x + c\right )}{d^{3} x + c d^{2}} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)/(d*x+c)^2,x, algorithm="fricas")

[Out]

(b*c - a*d + (b*d*x + b*c)*log(d*x + c))/(d^3*x + c*d^2)

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Sympy [A]
time = 0.08, size = 27, normalized size = 0.87 \begin {gather*} \frac {b \log {\left (c + d x \right )}}{d^{2}} + \frac {- a d + b c}{c d^{2} + d^{3} x} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)/(d*x+c)**2,x)

[Out]

b*log(c + d*x)/d**2 + (-a*d + b*c)/(c*d**2 + d**3*x)

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Giac [A]
time = 0.78, size = 57, normalized size = 1.84 \begin {gather*} -\frac {b {\left (\frac {\log \left (\frac {{\left | d x + c \right |}}{{\left (d x + c\right )}^{2} {\left | d \right |}}\right )}{d} - \frac {c}{{\left (d x + c\right )} d}\right )}}{d} - \frac {a}{{\left (d x + c\right )} d} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

integrate((b*x+a)/(d*x+c)^2,x, algorithm="giac")

[Out]

-b*(log(abs(d*x + c)/((d*x + c)^2*abs(d)))/d - c/((d*x + c)*d))/d - a/((d*x + c)*d)

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Mupad [B]
time = 0.04, size = 32, normalized size = 1.03 \begin {gather*} \frac {b\,\ln \left (c+d\,x\right )}{d^2}-\frac {a\,d-b\,c}{d^2\,\left (c+d\,x\right )} \end {gather*}

Verification of antiderivative is not currently implemented for this CAS.

[In]

int((a + b*x)/(c + d*x)^2,x)

[Out]

(b*log(c + d*x))/d^2 - (a*d - b*c)/(d^2*(c + d*x))

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