Integrand size = 9, antiderivative size = 25 \[ \int \log (a+b x+c x) \, dx=-x+\frac {(a+(b+c) x) \log (a+(b+c) x)}{b+c} \]
[Out]
Time = 0.01 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.333, Rules used = {2494, 2436, 2332} \[ \int \log (a+b x+c x) \, dx=\frac {(a+x (b+c)) \log (a+x (b+c))}{b+c}-x \]
[In]
[Out]
Rule 2332
Rule 2436
Rule 2494
Rubi steps \begin{align*} \text {integral}& = \int \log (a+(b+c) x) \, dx \\ & = \frac {\text {Subst}(\int \log (x) \, dx,x,a+(b+c) x)}{b+c} \\ & = -x+\frac {(a+(b+c) x) \log (a+(b+c) x)}{b+c} \\ \end{align*}
Time = 0.01 (sec) , antiderivative size = 25, normalized size of antiderivative = 1.00 \[ \int \log (a+b x+c x) \, dx=-x+\frac {(a+(b+c) x) \log (a+(b+c) x)}{b+c} \]
[In]
[Out]
Time = 0.08 (sec) , antiderivative size = 32, normalized size of antiderivative = 1.28
method | result | size |
norman | \(x \ln \left (b x +x c +a \right )+\frac {a \ln \left (b x +x c +a \right )}{b +c}-x\) | \(32\) |
derivativedivides | \(\frac {\left (a +\left (b +c \right ) x \right ) \ln \left (a +\left (b +c \right ) x \right )-a -\left (b +c \right ) x}{b +c}\) | \(33\) |
default | \(\frac {\left (a +\left (b +c \right ) x \right ) \ln \left (a +\left (b +c \right ) x \right )-a -\left (b +c \right ) x}{b +c}\) | \(33\) |
parts | \(x \ln \left (b x +x c +a \right )-\left (b +c \right ) \left (\frac {x}{b +c}-\frac {a \ln \left (b x +x c +a \right )}{\left (b +c \right )^{2}}\right )\) | \(43\) |
risch | \(x \ln \left (b x +x c +a \right )+\frac {a \ln \left (a +\left (b +c \right ) x \right )}{b +c}-\frac {b x}{b +c}-\frac {x c}{b +c}\) | \(46\) |
parallelrisch | \(\frac {x \ln \left (b x +x c +a \right ) a b +x \ln \left (b x +x c +a \right ) a c -a b x -x c a +\ln \left (b x +x c +a \right ) a^{2}}{a \left (b +c \right )}\) | \(60\) |
[In]
[Out]
none
Time = 0.28 (sec) , antiderivative size = 30, normalized size of antiderivative = 1.20 \[ \int \log (a+b x+c x) \, dx=-\frac {{\left (b + c\right )} x - {\left ({\left (b + c\right )} x + a\right )} \log \left ({\left (b + c\right )} x + a\right )}{b + c} \]
[In]
[Out]
Time = 0.11 (sec) , antiderivative size = 36, normalized size of antiderivative = 1.44 \[ \int \log (a+b x+c x) \, dx=x \log {\left (a + b x + c x \right )} + \left (- b - c\right ) \left (- \frac {a \log {\left (a + x \left (b + c\right ) \right )}}{\left (b + c\right )^{2}} + \frac {x}{b + c}\right ) \]
[In]
[Out]
none
Time = 0.19 (sec) , antiderivative size = 34, normalized size of antiderivative = 1.36 \[ \int \log (a+b x+c x) \, dx=-\frac {b x + c x - {\left (b x + c x + a\right )} \log \left (b x + c x + a\right ) + a}{b + c} \]
[In]
[Out]
none
Time = 0.32 (sec) , antiderivative size = 34, normalized size of antiderivative = 1.36 \[ \int \log (a+b x+c x) \, dx=-\frac {b x + c x - {\left (b x + c x + a\right )} \log \left (b x + c x + a\right ) + a}{b + c} \]
[In]
[Out]
Time = 0.08 (sec) , antiderivative size = 31, normalized size of antiderivative = 1.24 \[ \int \log (a+b x+c x) \, dx=x\,\ln \left (a+b\,x+c\,x\right )-x+\frac {a\,\ln \left (a+b\,x+c\,x\right )}{b+c} \]
[In]
[Out]