Integrand size = 22, antiderivative size = 139 \[ \int (e x)^m (c+d x) \sqrt {a+b x^2} \, dx=\frac {c (e x)^{1+m} \sqrt {a+b x^2} \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},\frac {1+m}{2},\frac {3+m}{2},-\frac {b x^2}{a}\right )}{e (1+m) \sqrt {1+\frac {b x^2}{a}}}+\frac {d (e x)^{2+m} \sqrt {a+b x^2} \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},\frac {2+m}{2},\frac {4+m}{2},-\frac {b x^2}{a}\right )}{e^2 (2+m) \sqrt {1+\frac {b x^2}{a}}} \] Output:
c*(e*x)^(1+m)*(b*x^2+a)^(1/2)*hypergeom([-1/2, 1/2+1/2*m],[3/2+1/2*m],-b*x ^2/a)/e/(1+m)/(1+b*x^2/a)^(1/2)+d*(e*x)^(2+m)*(b*x^2+a)^(1/2)*hypergeom([- 1/2, 1+1/2*m],[2+1/2*m],-b*x^2/a)/e^2/(2+m)/(1+b*x^2/a)^(1/2)
Time = 0.27 (sec) , antiderivative size = 108, normalized size of antiderivative = 0.78 \[ \int (e x)^m (c+d x) \sqrt {a+b x^2} \, dx=\frac {x (e x)^m \sqrt {a+b x^2} \left (c (2+m) \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},\frac {1+m}{2},\frac {3+m}{2},-\frac {b x^2}{a}\right )+d (1+m) x \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},\frac {2+m}{2},\frac {4+m}{2},-\frac {b x^2}{a}\right )\right )}{(1+m) (2+m) \sqrt {1+\frac {b x^2}{a}}} \] Input:
Integrate[(e*x)^m*(c + d*x)*Sqrt[a + b*x^2],x]
Output:
(x*(e*x)^m*Sqrt[a + b*x^2]*(c*(2 + m)*Hypergeometric2F1[-1/2, (1 + m)/2, ( 3 + m)/2, -((b*x^2)/a)] + d*(1 + m)*x*Hypergeometric2F1[-1/2, (2 + m)/2, ( 4 + m)/2, -((b*x^2)/a)]))/((1 + m)*(2 + m)*Sqrt[1 + (b*x^2)/a])
Time = 0.25 (sec) , antiderivative size = 139, normalized size of antiderivative = 1.00, number of steps used = 3, number of rules used = 3, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.136, Rules used = {557, 279, 278}
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.
\(\displaystyle \int \sqrt {a+b x^2} (c+d x) (e x)^m \, dx\) |
\(\Big \downarrow \) 557 |
\(\displaystyle c \int (e x)^m \sqrt {b x^2+a}dx+\frac {d \int (e x)^{m+1} \sqrt {b x^2+a}dx}{e}\) |
\(\Big \downarrow \) 279 |
\(\displaystyle \frac {c \sqrt {a+b x^2} \int (e x)^m \sqrt {\frac {b x^2}{a}+1}dx}{\sqrt {\frac {b x^2}{a}+1}}+\frac {d \sqrt {a+b x^2} \int (e x)^{m+1} \sqrt {\frac {b x^2}{a}+1}dx}{e \sqrt {\frac {b x^2}{a}+1}}\) |
\(\Big \downarrow \) 278 |
\(\displaystyle \frac {c \sqrt {a+b x^2} (e x)^{m+1} \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},\frac {m+1}{2},\frac {m+3}{2},-\frac {b x^2}{a}\right )}{e (m+1) \sqrt {\frac {b x^2}{a}+1}}+\frac {d \sqrt {a+b x^2} (e x)^{m+2} \operatorname {Hypergeometric2F1}\left (-\frac {1}{2},\frac {m+2}{2},\frac {m+4}{2},-\frac {b x^2}{a}\right )}{e^2 (m+2) \sqrt {\frac {b x^2}{a}+1}}\) |
Input:
Int[(e*x)^m*(c + d*x)*Sqrt[a + b*x^2],x]
Output:
(c*(e*x)^(1 + m)*Sqrt[a + b*x^2]*Hypergeometric2F1[-1/2, (1 + m)/2, (3 + m )/2, -((b*x^2)/a)])/(e*(1 + m)*Sqrt[1 + (b*x^2)/a]) + (d*(e*x)^(2 + m)*Sqr t[a + b*x^2]*Hypergeometric2F1[-1/2, (2 + m)/2, (4 + m)/2, -((b*x^2)/a)])/ (e^2*(2 + m)*Sqrt[1 + (b*x^2)/a])
Int[((c_.)*(x_))^(m_.)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> Simp[a^p*(( c*x)^(m + 1)/(c*(m + 1)))*Hypergeometric2F1[-p, (m + 1)/2, (m + 1)/2 + 1, ( -b)*(x^2/a)], x] /; FreeQ[{a, b, c, m, p}, x] && !IGtQ[p, 0] && (ILtQ[p, 0 ] || GtQ[a, 0])
Int[((c_.)*(x_))^(m_.)*((a_) + (b_.)*(x_)^2)^(p_), x_Symbol] :> Simp[a^IntP art[p]*((a + b*x^2)^FracPart[p]/(1 + b*(x^2/a))^FracPart[p]) Int[(c*x)^m* (1 + b*(x^2/a))^p, x], x] /; FreeQ[{a, b, c, m, p}, x] && !IGtQ[p, 0] && !(ILtQ[p, 0] || GtQ[a, 0])
Int[((e_.)*(x_))^(m_)*((c_) + (d_.)*(x_))*((a_) + (b_.)*(x_)^2)^(p_), x_Sym bol] :> Simp[c Int[(e*x)^m*(a + b*x^2)^p, x], x] + Simp[d/e Int[(e*x)^( m + 1)*(a + b*x^2)^p, x], x] /; FreeQ[{a, b, c, d, e, m, p}, x]
\[\int \left (e x \right )^{m} \left (d x +c \right ) \sqrt {b \,x^{2}+a}d x\]
Input:
int((e*x)^m*(d*x+c)*(b*x^2+a)^(1/2),x)
Output:
int((e*x)^m*(d*x+c)*(b*x^2+a)^(1/2),x)
\[ \int (e x)^m (c+d x) \sqrt {a+b x^2} \, dx=\int { \sqrt {b x^{2} + a} {\left (d x + c\right )} \left (e x\right )^{m} \,d x } \] Input:
integrate((e*x)^m*(d*x+c)*(b*x^2+a)^(1/2),x, algorithm="fricas")
Output:
integral(sqrt(b*x^2 + a)*(d*x + c)*(e*x)^m, x)
Result contains complex when optimal does not.
Time = 1.78 (sec) , antiderivative size = 114, normalized size of antiderivative = 0.82 \[ \int (e x)^m (c+d x) \sqrt {a+b x^2} \, dx=\frac {\sqrt {a} c e^{m} x^{m + 1} \Gamma \left (\frac {m}{2} + \frac {1}{2}\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {1}{2}, \frac {m}{2} + \frac {1}{2} \\ \frac {m}{2} + \frac {3}{2} \end {matrix}\middle | {\frac {b x^{2} e^{i \pi }}{a}} \right )}}{2 \Gamma \left (\frac {m}{2} + \frac {3}{2}\right )} + \frac {\sqrt {a} d e^{m} x^{m + 2} \Gamma \left (\frac {m}{2} + 1\right ) {{}_{2}F_{1}\left (\begin {matrix} - \frac {1}{2}, \frac {m}{2} + 1 \\ \frac {m}{2} + 2 \end {matrix}\middle | {\frac {b x^{2} e^{i \pi }}{a}} \right )}}{2 \Gamma \left (\frac {m}{2} + 2\right )} \] Input:
integrate((e*x)**m*(d*x+c)*(b*x**2+a)**(1/2),x)
Output:
sqrt(a)*c*e**m*x**(m + 1)*gamma(m/2 + 1/2)*hyper((-1/2, m/2 + 1/2), (m/2 + 3/2,), b*x**2*exp_polar(I*pi)/a)/(2*gamma(m/2 + 3/2)) + sqrt(a)*d*e**m*x* *(m + 2)*gamma(m/2 + 1)*hyper((-1/2, m/2 + 1), (m/2 + 2,), b*x**2*exp_pola r(I*pi)/a)/(2*gamma(m/2 + 2))
\[ \int (e x)^m (c+d x) \sqrt {a+b x^2} \, dx=\int { \sqrt {b x^{2} + a} {\left (d x + c\right )} \left (e x\right )^{m} \,d x } \] Input:
integrate((e*x)^m*(d*x+c)*(b*x^2+a)^(1/2),x, algorithm="maxima")
Output:
integrate(sqrt(b*x^2 + a)*(d*x + c)*(e*x)^m, x)
\[ \int (e x)^m (c+d x) \sqrt {a+b x^2} \, dx=\int { \sqrt {b x^{2} + a} {\left (d x + c\right )} \left (e x\right )^{m} \,d x } \] Input:
integrate((e*x)^m*(d*x+c)*(b*x^2+a)^(1/2),x, algorithm="giac")
Output:
integrate(sqrt(b*x^2 + a)*(d*x + c)*(e*x)^m, x)
Timed out. \[ \int (e x)^m (c+d x) \sqrt {a+b x^2} \, dx=\int {\left (e\,x\right )}^m\,\sqrt {b\,x^2+a}\,\left (c+d\,x\right ) \,d x \] Input:
int((e*x)^m*(a + b*x^2)^(1/2)*(c + d*x),x)
Output:
int((e*x)^m*(a + b*x^2)^(1/2)*(c + d*x), x)
\[ \int (e x)^m (c+d x) \sqrt {a+b x^2} \, dx=e^{m} \left (\left (\int x^{m} \sqrt {b \,x^{2}+a}\, x d x \right ) d +\left (\int x^{m} \sqrt {b \,x^{2}+a}d x \right ) c \right ) \] Input:
int((e*x)^m*(d*x+c)*(b*x^2+a)^(1/2),x)
Output:
e**m*(int(x**m*sqrt(a + b*x**2)*x,x)*d + int(x**m*sqrt(a + b*x**2),x)*c)