\(\int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx\) [741]

Optimal result

Integrand size = 22, antiderivative size = 155 \[ \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx=\frac {e (20 c d-7 b e+6 c e x) \left (a+b x+c x^2\right )^{3/4}}{15 c^2}+\frac {\sqrt {b^2-4 a c} \left (\left (7 b^2-8 a c\right ) e^2+20 c d (c d-b e)\right ) \sqrt [4]{-\frac {c \left (a+b x+c x^2\right )}{b^2-4 a c}} E\left (\left .\frac {1}{2} \arcsin \left (\frac {b+2 c x}{\sqrt {b^2-4 a c}}\right )\right |2\right )}{10 \sqrt {2} c^3 \sqrt [4]{a+b x+c x^2}} \] Output:

1/15*e*(6*c*e*x-7*b*e+20*c*d)*(c*x^2+b*x+a)^(3/4)/c^2+1/20*(-4*a*c+b^2)^(1 
/2)*((-8*a*c+7*b^2)*e^2+20*c*d*(-b*e+c*d))*(-c*(c*x^2+b*x+a)/(-4*a*c+b^2)) 
^(1/4)*EllipticE(sin(1/2*arcsin((2*c*x+b)/(-4*a*c+b^2)^(1/2))),2^(1/2))*2^ 
(1/2)/c^3/(c*x^2+b*x+a)^(1/4)
                                                                                    
                                                                                    
 

Mathematica [C] (verified)

Result contains higher order function than in optimal. Order 5 vs. order 4 in optimal.

Time = 10.23 (sec) , antiderivative size = 165, normalized size of antiderivative = 1.06 \[ \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx=\frac {-\frac {14 e (-2 c d+b e) (a+x (b+c x))}{c}+12 e (d+e x) (a+x (b+c x))+\frac {3 \left (20 c^2 d^2+7 b^2 e^2-4 c e (5 b d+2 a e)\right ) (b+2 c x) \sqrt [4]{\frac {c (a+x (b+c x))}{-b^2+4 a c}} \operatorname {Hypergeometric2F1}\left (\frac {1}{4},\frac {1}{2},\frac {3}{2},\frac {(b+2 c x)^2}{b^2-4 a c}\right )}{2 \sqrt {2} c^2}}{30 c \sqrt [4]{a+x (b+c x)}} \] Input:

Integrate[(d + e*x)^2/(a + b*x + c*x^2)^(1/4),x]
 

Output:

((-14*e*(-2*c*d + b*e)*(a + x*(b + c*x)))/c + 12*e*(d + e*x)*(a + x*(b + c 
*x)) + (3*(20*c^2*d^2 + 7*b^2*e^2 - 4*c*e*(5*b*d + 2*a*e))*(b + 2*c*x)*((c 
*(a + x*(b + c*x)))/(-b^2 + 4*a*c))^(1/4)*Hypergeometric2F1[1/4, 1/2, 3/2, 
 (b + 2*c*x)^2/(b^2 - 4*a*c)])/(2*Sqrt[2]*c^2))/(30*c*(a + x*(b + c*x))^(1 
/4))
 

Rubi [B] (warning: unable to verify)

Leaf count is larger than twice the leaf count of optimal. \(636\) vs. \(2(155)=310\).

Time = 0.57 (sec) , antiderivative size = 636, normalized size of antiderivative = 4.10, number of steps used = 8, number of rules used = 7, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.318, Rules used = {1166, 27, 1160, 1094, 834, 761, 1510}

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.

\(\displaystyle \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx\)

\(\Big \downarrow \) 1166

\(\displaystyle \frac {2 \int \frac {10 c d^2-3 b e d-4 a e^2+7 e (2 c d-b e) x}{4 \sqrt [4]{c x^2+b x+a}}dx}{5 c}+\frac {2 e (d+e x) \left (a+b x+c x^2\right )^{3/4}}{5 c}\)

\(\Big \downarrow \) 27

\(\displaystyle \frac {\int \frac {10 c d^2-3 b e d-4 a e^2+7 e (2 c d-b e) x}{\sqrt [4]{c x^2+b x+a}}dx}{10 c}+\frac {2 e (d+e x) \left (a+b x+c x^2\right )^{3/4}}{5 c}\)

\(\Big \downarrow \) 1160

\(\displaystyle \frac {\frac {\left (-4 c e (2 a e+5 b d)+7 b^2 e^2+20 c^2 d^2\right ) \int \frac {1}{\sqrt [4]{c x^2+b x+a}}dx}{2 c}+\frac {14 e \left (a+b x+c x^2\right )^{3/4} (2 c d-b e)}{3 c}}{10 c}+\frac {2 e (d+e x) \left (a+b x+c x^2\right )^{3/4}}{5 c}\)

\(\Big \downarrow \) 1094

\(\displaystyle \frac {\frac {2 \sqrt {(b+2 c x)^2} \left (-4 c e (2 a e+5 b d)+7 b^2 e^2+20 c^2 d^2\right ) \int \frac {\sqrt {c x^2+b x+a}}{\sqrt {b^2-4 a c+4 c \left (c x^2+b x+a\right )}}d\sqrt [4]{c x^2+b x+a}}{c (b+2 c x)}+\frac {14 e \left (a+b x+c x^2\right )^{3/4} (2 c d-b e)}{3 c}}{10 c}+\frac {2 e (d+e x) \left (a+b x+c x^2\right )^{3/4}}{5 c}\)

\(\Big \downarrow \) 834

\(\displaystyle \frac {\frac {2 \sqrt {(b+2 c x)^2} \left (-4 c e (2 a e+5 b d)+7 b^2 e^2+20 c^2 d^2\right ) \left (\frac {\sqrt {b^2-4 a c} \int \frac {1}{\sqrt {b^2-4 a c+4 c \left (c x^2+b x+a\right )}}d\sqrt [4]{c x^2+b x+a}}{2 \sqrt {c}}-\frac {\sqrt {b^2-4 a c} \int \frac {1-\frac {2 \sqrt {c} \sqrt {c x^2+b x+a}}{\sqrt {b^2-4 a c}}}{\sqrt {b^2-4 a c+4 c \left (c x^2+b x+a\right )}}d\sqrt [4]{c x^2+b x+a}}{2 \sqrt {c}}\right )}{c (b+2 c x)}+\frac {14 e \left (a+b x+c x^2\right )^{3/4} (2 c d-b e)}{3 c}}{10 c}+\frac {2 e (d+e x) \left (a+b x+c x^2\right )^{3/4}}{5 c}\)

\(\Big \downarrow \) 761

\(\displaystyle \frac {\frac {2 \sqrt {(b+2 c x)^2} \left (-4 c e (2 a e+5 b d)+7 b^2 e^2+20 c^2 d^2\right ) \left (\frac {\left (b^2-4 a c\right )^{3/4} \left (\frac {2 \sqrt {c} \sqrt {a+b x+c x^2}}{\sqrt {b^2-4 a c}}+1\right ) \sqrt {\frac {4 c \left (a+b x+c x^2\right )-4 a c+b^2}{\left (b^2-4 a c\right ) \left (\frac {2 \sqrt {c} \sqrt {a+b x+c x^2}}{\sqrt {b^2-4 a c}}+1\right )^2}} \operatorname {EllipticF}\left (2 \arctan \left (\frac {\sqrt {2} \sqrt [4]{c} \sqrt [4]{c x^2+b x+a}}{\sqrt [4]{b^2-4 a c}}\right ),\frac {1}{2}\right )}{4 \sqrt {2} c^{3/4} \sqrt {4 c \left (a+b x+c x^2\right )-4 a c+b^2}}-\frac {\sqrt {b^2-4 a c} \int \frac {1-\frac {2 \sqrt {c} \sqrt {c x^2+b x+a}}{\sqrt {b^2-4 a c}}}{\sqrt {b^2-4 a c+4 c \left (c x^2+b x+a\right )}}d\sqrt [4]{c x^2+b x+a}}{2 \sqrt {c}}\right )}{c (b+2 c x)}+\frac {14 e \left (a+b x+c x^2\right )^{3/4} (2 c d-b e)}{3 c}}{10 c}+\frac {2 e (d+e x) \left (a+b x+c x^2\right )^{3/4}}{5 c}\)

\(\Big \downarrow \) 1510

\(\displaystyle \frac {\frac {2 \sqrt {(b+2 c x)^2} \left (-4 c e (2 a e+5 b d)+7 b^2 e^2+20 c^2 d^2\right ) \left (\frac {\left (b^2-4 a c\right )^{3/4} \left (\frac {2 \sqrt {c} \sqrt {a+b x+c x^2}}{\sqrt {b^2-4 a c}}+1\right ) \sqrt {\frac {4 c \left (a+b x+c x^2\right )-4 a c+b^2}{\left (b^2-4 a c\right ) \left (\frac {2 \sqrt {c} \sqrt {a+b x+c x^2}}{\sqrt {b^2-4 a c}}+1\right )^2}} \operatorname {EllipticF}\left (2 \arctan \left (\frac {\sqrt {2} \sqrt [4]{c} \sqrt [4]{c x^2+b x+a}}{\sqrt [4]{b^2-4 a c}}\right ),\frac {1}{2}\right )}{4 \sqrt {2} c^{3/4} \sqrt {4 c \left (a+b x+c x^2\right )-4 a c+b^2}}-\frac {\sqrt {b^2-4 a c} \left (\frac {\sqrt [4]{b^2-4 a c} \left (\frac {2 \sqrt {c} \sqrt {a+b x+c x^2}}{\sqrt {b^2-4 a c}}+1\right ) \sqrt {\frac {4 c \left (a+b x+c x^2\right )-4 a c+b^2}{\left (b^2-4 a c\right ) \left (\frac {2 \sqrt {c} \sqrt {a+b x+c x^2}}{\sqrt {b^2-4 a c}}+1\right )^2}} E\left (2 \arctan \left (\frac {\sqrt {2} \sqrt [4]{c} \sqrt [4]{c x^2+b x+a}}{\sqrt [4]{b^2-4 a c}}\right )|\frac {1}{2}\right )}{\sqrt {2} \sqrt [4]{c} \sqrt {4 c \left (a+b x+c x^2\right )-4 a c+b^2}}-\frac {\sqrt [4]{a+b x+c x^2} \sqrt {4 c \left (a+b x+c x^2\right )-4 a c+b^2}}{\left (b^2-4 a c\right ) \left (\frac {2 \sqrt {c} \sqrt {a+b x+c x^2}}{\sqrt {b^2-4 a c}}+1\right )}\right )}{2 \sqrt {c}}\right )}{c (b+2 c x)}+\frac {14 e \left (a+b x+c x^2\right )^{3/4} (2 c d-b e)}{3 c}}{10 c}+\frac {2 e (d+e x) \left (a+b x+c x^2\right )^{3/4}}{5 c}\)

Input:

Int[(d + e*x)^2/(a + b*x + c*x^2)^(1/4),x]
 

Output:

(2*e*(d + e*x)*(a + b*x + c*x^2)^(3/4))/(5*c) + ((14*e*(2*c*d - b*e)*(a + 
b*x + c*x^2)^(3/4))/(3*c) + (2*(20*c^2*d^2 + 7*b^2*e^2 - 4*c*e*(5*b*d + 2* 
a*e))*Sqrt[(b + 2*c*x)^2]*(-1/2*(Sqrt[b^2 - 4*a*c]*(-(((a + b*x + c*x^2)^( 
1/4)*Sqrt[b^2 - 4*a*c + 4*c*(a + b*x + c*x^2)])/((b^2 - 4*a*c)*(1 + (2*Sqr 
t[c]*Sqrt[a + b*x + c*x^2])/Sqrt[b^2 - 4*a*c]))) + ((b^2 - 4*a*c)^(1/4)*(1 
 + (2*Sqrt[c]*Sqrt[a + b*x + c*x^2])/Sqrt[b^2 - 4*a*c])*Sqrt[(b^2 - 4*a*c 
+ 4*c*(a + b*x + c*x^2))/((b^2 - 4*a*c)*(1 + (2*Sqrt[c]*Sqrt[a + b*x + c*x 
^2])/Sqrt[b^2 - 4*a*c])^2)]*EllipticE[2*ArcTan[(Sqrt[2]*c^(1/4)*(a + b*x + 
 c*x^2)^(1/4))/(b^2 - 4*a*c)^(1/4)], 1/2])/(Sqrt[2]*c^(1/4)*Sqrt[b^2 - 4*a 
*c + 4*c*(a + b*x + c*x^2)])))/Sqrt[c] + ((b^2 - 4*a*c)^(3/4)*(1 + (2*Sqrt 
[c]*Sqrt[a + b*x + c*x^2])/Sqrt[b^2 - 4*a*c])*Sqrt[(b^2 - 4*a*c + 4*c*(a + 
 b*x + c*x^2))/((b^2 - 4*a*c)*(1 + (2*Sqrt[c]*Sqrt[a + b*x + c*x^2])/Sqrt[ 
b^2 - 4*a*c])^2)]*EllipticF[2*ArcTan[(Sqrt[2]*c^(1/4)*(a + b*x + c*x^2)^(1 
/4))/(b^2 - 4*a*c)^(1/4)], 1/2])/(4*Sqrt[2]*c^(3/4)*Sqrt[b^2 - 4*a*c + 4*c 
*(a + b*x + c*x^2)])))/(c*(b + 2*c*x)))/(10*c)
 

Defintions of rubi rules used

rule 27

Int[(a_)*(Fx_), x_Symbol] :> Simp[a   Int[Fx, x], x] /; FreeQ[a, x] &&  !Ma 
tchQ[Fx, (b_)*(Gx_) /; FreeQ[b, x]]
 

rule 761

Int[1/Sqrt[(a_) + (b_.)*(x_)^4], x_Symbol] :> With[{q = Rt[b/a, 4]}, Simp[( 
1 + q^2*x^2)*(Sqrt[(a + b*x^4)/(a*(1 + q^2*x^2)^2)]/(2*q*Sqrt[a + b*x^4]))* 
EllipticF[2*ArcTan[q*x], 1/2], x]] /; FreeQ[{a, b}, x] && PosQ[b/a]
 

rule 834

Int[(x_)^2/Sqrt[(a_) + (b_.)*(x_)^4], x_Symbol] :> With[{q = Rt[b/a, 2]}, S 
imp[1/q   Int[1/Sqrt[a + b*x^4], x], x] - Simp[1/q   Int[(1 - q*x^2)/Sqrt[a 
 + b*x^4], x], x]] /; FreeQ[{a, b}, x] && PosQ[b/a]
 

rule 1094

Int[((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_Symbol] :> Simp[4*(Sqrt[(b 
+ 2*c*x)^2]/(b + 2*c*x))   Subst[Int[x^(4*(p + 1) - 1)/Sqrt[b^2 - 4*a*c + 4 
*c*x^4], x], x, (a + b*x + c*x^2)^(1/4)], x] /; FreeQ[{a, b, c}, x] && Inte 
gerQ[4*p]
 

rule 1160

Int[((d_.) + (e_.)*(x_))*((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_Symbol 
] :> Simp[e*((a + b*x + c*x^2)^(p + 1)/(2*c*(p + 1))), x] + Simp[(2*c*d - b 
*e)/(2*c)   Int[(a + b*x + c*x^2)^p, x], x] /; FreeQ[{a, b, c, d, e, p}, x] 
 && NeQ[p, -1]
 

rule 1166

Int[((d_.) + (e_.)*(x_))^(m_)*((a_.) + (b_.)*(x_) + (c_.)*(x_)^2)^(p_), x_S 
ymbol] :> Simp[e*(d + e*x)^(m - 1)*((a + b*x + c*x^2)^(p + 1)/(c*(m + 2*p + 
 1))), x] + Simp[1/(c*(m + 2*p + 1))   Int[(d + e*x)^(m - 2)*Simp[c*d^2*(m 
+ 2*p + 1) - e*(a*e*(m - 1) + b*d*(p + 1)) + e*(2*c*d - b*e)*(m + p)*x, x]* 
(a + b*x + c*x^2)^p, x], x] /; FreeQ[{a, b, c, d, e, m, p}, x] && If[Ration 
alQ[m], GtQ[m, 1], SumSimplerQ[m, -2]] && NeQ[m + 2*p + 1, 0] && IntQuadrat 
icQ[a, b, c, d, e, m, p, x]
 

rule 1510

Int[((d_) + (e_.)*(x_)^2)/Sqrt[(a_) + (c_.)*(x_)^4], x_Symbol] :> With[{q = 
 Rt[c/a, 4]}, Simp[(-d)*x*(Sqrt[a + c*x^4]/(a*(1 + q^2*x^2))), x] + Simp[d* 
(1 + q^2*x^2)*(Sqrt[(a + c*x^4)/(a*(1 + q^2*x^2)^2)]/(q*Sqrt[a + c*x^4]))*E 
llipticE[2*ArcTan[q*x], 1/2], x] /; EqQ[e + d*q^2, 0]] /; FreeQ[{a, c, d, e 
}, x] && PosQ[c/a]
 

Maple [F]

\[\int \frac {\left (e x +d \right )^{2}}{\left (c \,x^{2}+b x +a \right )^{\frac {1}{4}}}d x\]

Input:

int((e*x+d)^2/(c*x^2+b*x+a)^(1/4),x)
 

Output:

int((e*x+d)^2/(c*x^2+b*x+a)^(1/4),x)
 

Fricas [F]

\[ \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx=\int { \frac {{\left (e x + d\right )}^{2}}{{\left (c x^{2} + b x + a\right )}^{\frac {1}{4}}} \,d x } \] Input:

integrate((e*x+d)^2/(c*x^2+b*x+a)^(1/4),x, algorithm="fricas")
 

Output:

integral((e^2*x^2 + 2*d*e*x + d^2)/(c*x^2 + b*x + a)^(1/4), x)
 

Sympy [F]

\[ \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx=\int \frac {\left (d + e x\right )^{2}}{\sqrt [4]{a + b x + c x^{2}}}\, dx \] Input:

integrate((e*x+d)**2/(c*x**2+b*x+a)**(1/4),x)
 

Output:

Integral((d + e*x)**2/(a + b*x + c*x**2)**(1/4), x)
 

Maxima [F]

\[ \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx=\int { \frac {{\left (e x + d\right )}^{2}}{{\left (c x^{2} + b x + a\right )}^{\frac {1}{4}}} \,d x } \] Input:

integrate((e*x+d)^2/(c*x^2+b*x+a)^(1/4),x, algorithm="maxima")
 

Output:

integrate((e*x + d)^2/(c*x^2 + b*x + a)^(1/4), x)
 

Giac [F]

\[ \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx=\int { \frac {{\left (e x + d\right )}^{2}}{{\left (c x^{2} + b x + a\right )}^{\frac {1}{4}}} \,d x } \] Input:

integrate((e*x+d)^2/(c*x^2+b*x+a)^(1/4),x, algorithm="giac")
 

Output:

integrate((e*x + d)^2/(c*x^2 + b*x + a)^(1/4), x)
 

Mupad [F(-1)]

Timed out. \[ \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx=\int \frac {{\left (d+e\,x\right )}^2}{{\left (c\,x^2+b\,x+a\right )}^{1/4}} \,d x \] Input:

int((d + e*x)^2/(a + b*x + c*x^2)^(1/4),x)
 

Output:

int((d + e*x)^2/(a + b*x + c*x^2)^(1/4), x)
 

Reduce [F]

\[ \int \frac {(d+e x)^2}{\sqrt [4]{a+b x+c x^2}} \, dx=\left (\int \frac {x^{2}}{\left (c \,x^{2}+b x +a \right )^{\frac {1}{4}}}d x \right ) e^{2}+2 \left (\int \frac {x}{\left (c \,x^{2}+b x +a \right )^{\frac {1}{4}}}d x \right ) d e +\left (\int \frac {1}{\left (c \,x^{2}+b x +a \right )^{\frac {1}{4}}}d x \right ) d^{2} \] Input:

int((e*x+d)^2/(c*x^2+b*x+a)^(1/4),x)
 

Output:

int(x**2/(a + b*x + c*x**2)**(1/4),x)*e**2 + 2*int(x/(a + b*x + c*x**2)**( 
1/4),x)*d*e + int(1/(a + b*x + c*x**2)**(1/4),x)*d**2