Integrand size = 29, antiderivative size = 317 \[ \int (f x)^m \left (d+e x^2\right ) \sqrt {a+b x^2+c x^4} \, dx=\frac {d (f x)^{1+m} \sqrt {a+b x^2+c x^4} \operatorname {AppellF1}\left (\frac {1+m}{2},-\frac {1}{2},-\frac {1}{2},\frac {3+m}{2},-\frac {2 c x^2}{b-\sqrt {b^2-4 a c}},-\frac {2 c x^2}{b+\sqrt {b^2-4 a c}}\right )}{f (1+m) \sqrt {1+\frac {2 c x^2}{b-\sqrt {b^2-4 a c}}} \sqrt {1+\frac {2 c x^2}{b+\sqrt {b^2-4 a c}}}}+\frac {e (f x)^{3+m} \sqrt {a+b x^2+c x^4} \operatorname {AppellF1}\left (\frac {3+m}{2},-\frac {1}{2},-\frac {1}{2},\frac {5+m}{2},-\frac {2 c x^2}{b-\sqrt {b^2-4 a c}},-\frac {2 c x^2}{b+\sqrt {b^2-4 a c}}\right )}{f^3 (3+m) \sqrt {1+\frac {2 c x^2}{b-\sqrt {b^2-4 a c}}} \sqrt {1+\frac {2 c x^2}{b+\sqrt {b^2-4 a c}}}} \]
d*(f*x)^(1+m)*AppellF1(1/2+1/2*m,-1/2,-1/2,3/2+1/2*m,-2*c*x^2/(b-(-4*a*c+b ^2)^(1/2)),-2*c*x^2/(b+(-4*a*c+b^2)^(1/2)))*(c*x^4+b*x^2+a)^(1/2)/f/(1+m)/ (1+2*c*x^2/(b-(-4*a*c+b^2)^(1/2)))^(1/2)/(1+2*c*x^2/(b+(-4*a*c+b^2)^(1/2)) )^(1/2)+e*(f*x)^(3+m)*AppellF1(3/2+1/2*m,-1/2,-1/2,5/2+1/2*m,-2*c*x^2/(b-( -4*a*c+b^2)^(1/2)),-2*c*x^2/(b+(-4*a*c+b^2)^(1/2)))*(c*x^4+b*x^2+a)^(1/2)/ f^3/(3+m)/(1+2*c*x^2/(b-(-4*a*c+b^2)^(1/2)))^(1/2)/(1+2*c*x^2/(b+(-4*a*c+b ^2)^(1/2)))^(1/2)
Time = 1.98 (sec) , antiderivative size = 267, normalized size of antiderivative = 0.84 \[ \int (f x)^m \left (d+e x^2\right ) \sqrt {a+b x^2+c x^4} \, dx=\frac {x (f x)^m \sqrt {a+b x^2+c x^4} \left (d (3+m) \operatorname {AppellF1}\left (\frac {1+m}{2},-\frac {1}{2},-\frac {1}{2},\frac {3+m}{2},-\frac {2 c x^2}{b+\sqrt {b^2-4 a c}},\frac {2 c x^2}{-b+\sqrt {b^2-4 a c}}\right )+e (1+m) x^2 \operatorname {AppellF1}\left (\frac {3+m}{2},-\frac {1}{2},-\frac {1}{2},\frac {5+m}{2},-\frac {2 c x^2}{b+\sqrt {b^2-4 a c}},\frac {2 c x^2}{-b+\sqrt {b^2-4 a c}}\right )\right )}{(1+m) (3+m) \sqrt {\frac {b-\sqrt {b^2-4 a c}+2 c x^2}{b-\sqrt {b^2-4 a c}}} \sqrt {\frac {b+\sqrt {b^2-4 a c}+2 c x^2}{b+\sqrt {b^2-4 a c}}}} \]
(x*(f*x)^m*Sqrt[a + b*x^2 + c*x^4]*(d*(3 + m)*AppellF1[(1 + m)/2, -1/2, -1 /2, (3 + m)/2, (-2*c*x^2)/(b + Sqrt[b^2 - 4*a*c]), (2*c*x^2)/(-b + Sqrt[b^ 2 - 4*a*c])] + e*(1 + m)*x^2*AppellF1[(3 + m)/2, -1/2, -1/2, (5 + m)/2, (- 2*c*x^2)/(b + Sqrt[b^2 - 4*a*c]), (2*c*x^2)/(-b + Sqrt[b^2 - 4*a*c])]))/(( 1 + m)*(3 + m)*Sqrt[(b - Sqrt[b^2 - 4*a*c] + 2*c*x^2)/(b - Sqrt[b^2 - 4*a* c])]*Sqrt[(b + Sqrt[b^2 - 4*a*c] + 2*c*x^2)/(b + Sqrt[b^2 - 4*a*c])])
Time = 0.49 (sec) , antiderivative size = 317, normalized size of antiderivative = 1.00, number of steps used = 2, number of rules used = 2, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.069, Rules used = {1674, 2009}
Below are the steps used by Rubi to obtain the solution. The rule number used for the transformation is given above next to the arrow. The rules definitions used are listed below.
\(\displaystyle \int \left (d+e x^2\right ) (f x)^m \sqrt {a+b x^2+c x^4} \, dx\) |
\(\Big \downarrow \) 1674 |
\(\displaystyle \int \left (d (f x)^m \sqrt {a+b x^2+c x^4}+\frac {e (f x)^{m+2} \sqrt {a+b x^2+c x^4}}{f^2}\right )dx\) |
\(\Big \downarrow \) 2009 |
\(\displaystyle \frac {d (f x)^{m+1} \sqrt {a+b x^2+c x^4} \operatorname {AppellF1}\left (\frac {m+1}{2},-\frac {1}{2},-\frac {1}{2},\frac {m+3}{2},-\frac {2 c x^2}{b-\sqrt {b^2-4 a c}},-\frac {2 c x^2}{b+\sqrt {b^2-4 a c}}\right )}{f (m+1) \sqrt {\frac {2 c x^2}{b-\sqrt {b^2-4 a c}}+1} \sqrt {\frac {2 c x^2}{\sqrt {b^2-4 a c}+b}+1}}+\frac {e (f x)^{m+3} \sqrt {a+b x^2+c x^4} \operatorname {AppellF1}\left (\frac {m+3}{2},-\frac {1}{2},-\frac {1}{2},\frac {m+5}{2},-\frac {2 c x^2}{b-\sqrt {b^2-4 a c}},-\frac {2 c x^2}{b+\sqrt {b^2-4 a c}}\right )}{f^3 (m+3) \sqrt {\frac {2 c x^2}{b-\sqrt {b^2-4 a c}}+1} \sqrt {\frac {2 c x^2}{\sqrt {b^2-4 a c}+b}+1}}\) |
(d*(f*x)^(1 + m)*Sqrt[a + b*x^2 + c*x^4]*AppellF1[(1 + m)/2, -1/2, -1/2, ( 3 + m)/2, (-2*c*x^2)/(b - Sqrt[b^2 - 4*a*c]), (-2*c*x^2)/(b + Sqrt[b^2 - 4 *a*c])])/(f*(1 + m)*Sqrt[1 + (2*c*x^2)/(b - Sqrt[b^2 - 4*a*c])]*Sqrt[1 + ( 2*c*x^2)/(b + Sqrt[b^2 - 4*a*c])]) + (e*(f*x)^(3 + m)*Sqrt[a + b*x^2 + c*x ^4]*AppellF1[(3 + m)/2, -1/2, -1/2, (5 + m)/2, (-2*c*x^2)/(b - Sqrt[b^2 - 4*a*c]), (-2*c*x^2)/(b + Sqrt[b^2 - 4*a*c])])/(f^3*(3 + m)*Sqrt[1 + (2*c*x ^2)/(b - Sqrt[b^2 - 4*a*c])]*Sqrt[1 + (2*c*x^2)/(b + Sqrt[b^2 - 4*a*c])])
3.3.26.3.1 Defintions of rubi rules used
Int[((f_.)*(x_))^(m_.)*((d_) + (e_.)*(x_)^2)^(q_.)*((a_) + (b_.)*(x_)^2 + ( c_.)*(x_)^4)^(p_.), x_Symbol] :> Int[ExpandIntegrand[(f*x)^m*(d + e*x^2)^q* (a + b*x^2 + c*x^4)^p, x], x] /; FreeQ[{a, b, c, d, e, f, m, p, q}, x] && N eQ[b^2 - 4*a*c, 0] && (IGtQ[p, 0] || IGtQ[q, 0] || IntegersQ[m, q])
\[\int \left (f x \right )^{m} \left (e \,x^{2}+d \right ) \sqrt {c \,x^{4}+b \,x^{2}+a}d x\]
\[ \int (f x)^m \left (d+e x^2\right ) \sqrt {a+b x^2+c x^4} \, dx=\int { \sqrt {c x^{4} + b x^{2} + a} {\left (e x^{2} + d\right )} \left (f x\right )^{m} \,d x } \]
\[ \int (f x)^m \left (d+e x^2\right ) \sqrt {a+b x^2+c x^4} \, dx=\int \left (f x\right )^{m} \left (d + e x^{2}\right ) \sqrt {a + b x^{2} + c x^{4}}\, dx \]
\[ \int (f x)^m \left (d+e x^2\right ) \sqrt {a+b x^2+c x^4} \, dx=\int { \sqrt {c x^{4} + b x^{2} + a} {\left (e x^{2} + d\right )} \left (f x\right )^{m} \,d x } \]
\[ \int (f x)^m \left (d+e x^2\right ) \sqrt {a+b x^2+c x^4} \, dx=\int { \sqrt {c x^{4} + b x^{2} + a} {\left (e x^{2} + d\right )} \left (f x\right )^{m} \,d x } \]
Timed out. \[ \int (f x)^m \left (d+e x^2\right ) \sqrt {a+b x^2+c x^4} \, dx=\int {\left (f\,x\right )}^m\,\left (e\,x^2+d\right )\,\sqrt {c\,x^4+b\,x^2+a} \,d x \]