Integrand size = 28, antiderivative size = 157 \[ \int \frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{(1-2 x)^{3/2}} \, dx=\frac {419}{50} \sqrt {1-2 x} \sqrt {2+3 x} \sqrt {3+5 x}+\frac {9}{5} \sqrt {1-2 x} (2+3 x)^{3/2} \sqrt {3+5 x}+\frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{\sqrt {1-2 x}}+\frac {7279}{75} \sqrt {\frac {7}{5}} E\left (\arcsin \left (\sqrt {\frac {5}{11}} \sqrt {1-2 x}\right )|\frac {33}{35}\right )-\frac {419}{150} \sqrt {\frac {7}{5}} \operatorname {EllipticF}\left (\arcsin \left (\sqrt {\frac {5}{11}} \sqrt {1-2 x}\right ),\frac {33}{35}\right ) \] Output:
419/50*(1-2*x)^(1/2)*(2+3*x)^(1/2)*(3+5*x)^(1/2)+9/5*(1-2*x)^(1/2)*(2+3*x) ^(3/2)*(3+5*x)^(1/2)+(2+3*x)^(5/2)*(3+5*x)^(1/2)/(1-2*x)^(1/2)+7279/375*El lipticE(1/11*55^(1/2)*(1-2*x)^(1/2),1/35*1155^(1/2))*35^(1/2)-419/750*Elli pticF(1/11*55^(1/2)*(1-2*x)^(1/2),1/35*1155^(1/2))*35^(1/2)
Result contains complex when optimal does not.
Time = 5.77 (sec) , antiderivative size = 106, normalized size of antiderivative = 0.68 \[ \int \frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{(1-2 x)^{3/2}} \, dx=\frac {-165 \sqrt {2+3 x} \sqrt {3+5 x} \left (-799+328 x+90 x^2\right )-160138 i \sqrt {33-66 x} E\left (i \text {arcsinh}\left (\sqrt {9+15 x}\right )|-\frac {2}{33}\right )+164955 i \sqrt {33-66 x} \operatorname {EllipticF}\left (i \text {arcsinh}\left (\sqrt {9+15 x}\right ),-\frac {2}{33}\right )}{8250 \sqrt {1-2 x}} \] Input:
Integrate[((2 + 3*x)^(5/2)*Sqrt[3 + 5*x])/(1 - 2*x)^(3/2),x]
Output:
(-165*Sqrt[2 + 3*x]*Sqrt[3 + 5*x]*(-799 + 328*x + 90*x^2) - (160138*I)*Sqr t[33 - 66*x]*EllipticE[I*ArcSinh[Sqrt[9 + 15*x]], -2/33] + (164955*I)*Sqrt [33 - 66*x]*EllipticF[I*ArcSinh[Sqrt[9 + 15*x]], -2/33])/(8250*Sqrt[1 - 2* x])
Time = 0.25 (sec) , antiderivative size = 170, normalized size of antiderivative = 1.08, number of steps used = 9, number of rules used = 9, \(\frac {\text {number of rules}}{\text {integrand size}}\) = 0.321, Rules used = {108, 27, 171, 25, 171, 27, 176, 123, 129}
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.
\(\displaystyle \int \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{(1-2 x)^{3/2}} \, dx\) |
\(\Big \downarrow \) 108 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\int \frac {5 (3 x+2)^{3/2} (18 x+11)}{2 \sqrt {1-2 x} \sqrt {5 x+3}}dx\) |
\(\Big \downarrow \) 27 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\frac {5}{2} \int \frac {(3 x+2)^{3/2} (18 x+11)}{\sqrt {1-2 x} \sqrt {5 x+3}}dx\) |
\(\Big \downarrow \) 171 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\frac {5}{2} \left (-\frac {1}{25} \int -\frac {\sqrt {3 x+2} (1257 x+775)}{\sqrt {1-2 x} \sqrt {5 x+3}}dx-\frac {18}{25} \sqrt {1-2 x} \sqrt {5 x+3} (3 x+2)^{3/2}\right )\) |
\(\Big \downarrow \) 25 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\frac {5}{2} \left (\frac {1}{25} \int \frac {\sqrt {3 x+2} (1257 x+775)}{\sqrt {1-2 x} \sqrt {5 x+3}}dx-\frac {18}{25} \sqrt {1-2 x} (3 x+2)^{3/2} \sqrt {5 x+3}\right )\) |
\(\Big \downarrow \) 171 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\frac {5}{2} \left (\frac {1}{25} \left (-\frac {1}{15} \int -\frac {3 (29116 x+18433)}{2 \sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}}dx-\frac {419}{5} \sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}\right )-\frac {18}{25} \sqrt {1-2 x} (3 x+2)^{3/2} \sqrt {5 x+3}\right )\) |
\(\Big \downarrow \) 27 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\frac {5}{2} \left (\frac {1}{25} \left (\frac {1}{10} \int \frac {29116 x+18433}{\sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}}dx-\frac {419}{5} \sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}\right )-\frac {18}{25} \sqrt {1-2 x} (3 x+2)^{3/2} \sqrt {5 x+3}\right )\) |
\(\Big \downarrow \) 176 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\frac {5}{2} \left (\frac {1}{25} \left (\frac {1}{10} \left (\frac {4817}{5} \int \frac {1}{\sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}}dx+\frac {29116}{5} \int \frac {\sqrt {5 x+3}}{\sqrt {1-2 x} \sqrt {3 x+2}}dx\right )-\frac {419}{5} \sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}\right )-\frac {18}{25} \sqrt {1-2 x} (3 x+2)^{3/2} \sqrt {5 x+3}\right )\) |
\(\Big \downarrow \) 123 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\frac {5}{2} \left (\frac {1}{25} \left (\frac {1}{10} \left (\frac {4817}{5} \int \frac {1}{\sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}}dx-\frac {29116}{5} \sqrt {\frac {11}{3}} E\left (\arcsin \left (\sqrt {\frac {3}{7}} \sqrt {1-2 x}\right )|\frac {35}{33}\right )\right )-\frac {419}{5} \sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}\right )-\frac {18}{25} \sqrt {1-2 x} (3 x+2)^{3/2} \sqrt {5 x+3}\right )\) |
\(\Big \downarrow \) 129 |
\(\displaystyle \frac {(3 x+2)^{5/2} \sqrt {5 x+3}}{\sqrt {1-2 x}}-\frac {5}{2} \left (\frac {1}{25} \left (\frac {1}{10} \left (-\frac {9634 \operatorname {EllipticF}\left (\arcsin \left (\sqrt {\frac {3}{7}} \sqrt {1-2 x}\right ),\frac {35}{33}\right )}{5 \sqrt {33}}-\frac {29116}{5} \sqrt {\frac {11}{3}} E\left (\arcsin \left (\sqrt {\frac {3}{7}} \sqrt {1-2 x}\right )|\frac {35}{33}\right )\right )-\frac {419}{5} \sqrt {1-2 x} \sqrt {3 x+2} \sqrt {5 x+3}\right )-\frac {18}{25} \sqrt {1-2 x} (3 x+2)^{3/2} \sqrt {5 x+3}\right )\) |
Input:
Int[((2 + 3*x)^(5/2)*Sqrt[3 + 5*x])/(1 - 2*x)^(3/2),x]
Output:
((2 + 3*x)^(5/2)*Sqrt[3 + 5*x])/Sqrt[1 - 2*x] - (5*((-18*Sqrt[1 - 2*x]*(2 + 3*x)^(3/2)*Sqrt[3 + 5*x])/25 + ((-419*Sqrt[1 - 2*x]*Sqrt[2 + 3*x]*Sqrt[3 + 5*x])/5 + ((-29116*Sqrt[11/3]*EllipticE[ArcSin[Sqrt[3/7]*Sqrt[1 - 2*x]] , 35/33])/5 - (9634*EllipticF[ArcSin[Sqrt[3/7]*Sqrt[1 - 2*x]], 35/33])/(5* Sqrt[33]))/10)/25))/2
Int[(a_)*(Fx_), x_Symbol] :> Simp[a Int[Fx, x], x] /; FreeQ[a, x] && !Ma tchQ[Fx, (b_)*(Gx_) /; FreeQ[b, x]]
Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_)*((e_.) + (f_.)*(x_) )^(p_), x_] :> Simp[(a + b*x)^(m + 1)*(c + d*x)^n*((e + f*x)^p/(b*(m + 1))) , x] - Simp[1/(b*(m + 1)) Int[(a + b*x)^(m + 1)*(c + d*x)^(n - 1)*(e + f* x)^(p - 1)*Simp[d*e*n + c*f*p + d*f*(n + p)*x, x], x], x] /; FreeQ[{a, b, c , d, e, f}, x] && LtQ[m, -1] && GtQ[n, 0] && GtQ[p, 0] && (IntegersQ[2*m, 2 *n, 2*p] || IntegersQ[m, n + p] || IntegersQ[p, m + n])
Int[Sqrt[(e_.) + (f_.)*(x_)]/(Sqrt[(a_) + (b_.)*(x_)]*Sqrt[(c_) + (d_.)*(x_ )]), x_] :> Simp[(2/b)*Rt[-(b*e - a*f)/d, 2]*EllipticE[ArcSin[Sqrt[a + b*x] /Rt[-(b*c - a*d)/d, 2]], f*((b*c - a*d)/(d*(b*e - a*f)))], x] /; FreeQ[{a, b, c, d, e, f}, x] && GtQ[b/(b*c - a*d), 0] && GtQ[b/(b*e - a*f), 0] && !L tQ[-(b*c - a*d)/d, 0] && !(SimplerQ[c + d*x, a + b*x] && GtQ[-d/(b*c - a*d ), 0] && GtQ[d/(d*e - c*f), 0] && !LtQ[(b*c - a*d)/b, 0])
Int[1/(Sqrt[(a_) + (b_.)*(x_)]*Sqrt[(c_) + (d_.)*(x_)]*Sqrt[(e_) + (f_.)*(x _)]), x_] :> Simp[2*(Rt[-b/d, 2]/(b*Sqrt[(b*e - a*f)/b]))*EllipticF[ArcSin[ Sqrt[a + b*x]/(Rt[-b/d, 2]*Sqrt[(b*c - a*d)/b])], f*((b*c - a*d)/(d*(b*e - a*f)))], x] /; FreeQ[{a, b, c, d, e, f}, x] && GtQ[(b*c - a*d)/b, 0] && GtQ [(b*e - a*f)/b, 0] && PosQ[-b/d] && !(SimplerQ[c + d*x, a + b*x] && GtQ[(d *e - c*f)/d, 0] && GtQ[-d/b, 0]) && !(SimplerQ[c + d*x, a + b*x] && GtQ[(( -b)*e + a*f)/f, 0] && GtQ[-f/b, 0]) && !(SimplerQ[e + f*x, a + b*x] && GtQ [((-d)*e + c*f)/f, 0] && GtQ[((-b)*e + a*f)/f, 0] && (PosQ[-f/d] || PosQ[-f /b]))
Int[((a_.) + (b_.)*(x_))^(m_)*((c_.) + (d_.)*(x_))^(n_)*((e_.) + (f_.)*(x_) )^(p_)*((g_.) + (h_.)*(x_)), x_] :> Simp[h*(a + b*x)^m*(c + d*x)^(n + 1)*(( e + f*x)^(p + 1)/(d*f*(m + n + p + 2))), x] + Simp[1/(d*f*(m + n + p + 2)) Int[(a + b*x)^(m - 1)*(c + d*x)^n*(e + f*x)^p*Simp[a*d*f*g*(m + n + p + 2 ) - h*(b*c*e*m + a*(d*e*(n + 1) + c*f*(p + 1))) + (b*d*f*g*(m + n + p + 2) + h*(a*d*f*m - b*(d*e*(m + n + 1) + c*f*(m + p + 1))))*x, x], x], x] /; Fre eQ[{a, b, c, d, e, f, g, h, n, p}, x] && GtQ[m, 0] && NeQ[m + n + p + 2, 0] && IntegersQ[2*m, 2*n, 2*p]
Int[((g_.) + (h_.)*(x_))/(Sqrt[(a_.) + (b_.)*(x_)]*Sqrt[(c_) + (d_.)*(x_)]* Sqrt[(e_) + (f_.)*(x_)]), x_] :> Simp[h/f Int[Sqrt[e + f*x]/(Sqrt[a + b*x ]*Sqrt[c + d*x]), x], x] + Simp[(f*g - e*h)/f Int[1/(Sqrt[a + b*x]*Sqrt[c + d*x]*Sqrt[e + f*x]), x], x] /; FreeQ[{a, b, c, d, e, f, g, h}, x] && Sim plerQ[a + b*x, e + f*x] && SimplerQ[c + d*x, e + f*x]
Time = 0.44 (sec) , antiderivative size = 143, normalized size of antiderivative = 0.91
method | result | size |
default | \(\frac {\sqrt {2+3 x}\, \sqrt {3+5 x}\, \sqrt {1-2 x}\, \left (14451 \sqrt {2}\, \sqrt {2+3 x}\, \sqrt {-3-5 x}\, \sqrt {1-2 x}\, \operatorname {EllipticF}\left (\frac {\sqrt {28+42 x}}{7}, \frac {\sqrt {70}}{2}\right )-29116 \sqrt {2}\, \sqrt {2+3 x}\, \sqrt {-3-5 x}\, \sqrt {1-2 x}\, \operatorname {EllipticE}\left (\frac {\sqrt {28+42 x}}{7}, \frac {\sqrt {70}}{2}\right )+40500 x^{4}+198900 x^{3}-156390 x^{2}-396390 x -143820\right )}{45000 x^{3}+34500 x^{2}-10500 x -9000}\) | \(143\) |
elliptic | \(\frac {\sqrt {-\left (3+5 x \right ) \left (-1+2 x \right ) \left (2+3 x \right )}\, \left (\frac {9 x \sqrt {-30 x^{3}-23 x^{2}+7 x +6}}{10}+\frac {373 \sqrt {-30 x^{3}-23 x^{2}+7 x +6}}{100}-\frac {18433 \sqrt {28+42 x}\, \sqrt {-15 x -9}\, \sqrt {21-42 x}\, \operatorname {EllipticF}\left (\frac {\sqrt {28+42 x}}{7}, \frac {\sqrt {70}}{2}\right )}{2100 \sqrt {-30 x^{3}-23 x^{2}+7 x +6}}-\frac {7279 \sqrt {28+42 x}\, \sqrt {-15 x -9}\, \sqrt {21-42 x}\, \left (-\frac {\operatorname {EllipticE}\left (\frac {\sqrt {28+42 x}}{7}, \frac {\sqrt {70}}{2}\right )}{15}-\frac {3 \operatorname {EllipticF}\left (\frac {\sqrt {28+42 x}}{7}, \frac {\sqrt {70}}{2}\right )}{5}\right )}{525 \sqrt {-30 x^{3}-23 x^{2}+7 x +6}}-\frac {49 \left (-30 x^{2}-38 x -12\right )}{8 \sqrt {\left (x -\frac {1}{2}\right ) \left (-30 x^{2}-38 x -12\right )}}\right )}{\sqrt {1-2 x}\, \sqrt {2+3 x}\, \sqrt {3+5 x}}\) | \(240\) |
Input:
int((2+3*x)^(5/2)*(3+5*x)^(1/2)/(1-2*x)^(3/2),x,method=_RETURNVERBOSE)
Output:
1/1500*(2+3*x)^(1/2)*(3+5*x)^(1/2)*(1-2*x)^(1/2)*(14451*2^(1/2)*(2+3*x)^(1 /2)*(-3-5*x)^(1/2)*(1-2*x)^(1/2)*EllipticF(1/7*(28+42*x)^(1/2),1/2*70^(1/2 ))-29116*2^(1/2)*(2+3*x)^(1/2)*(-3-5*x)^(1/2)*(1-2*x)^(1/2)*EllipticE(1/7* (28+42*x)^(1/2),1/2*70^(1/2))+40500*x^4+198900*x^3-156390*x^2-396390*x-143 820)/(30*x^3+23*x^2-7*x-6)
Time = 0.07 (sec) , antiderivative size = 78, normalized size of antiderivative = 0.50 \[ \int \frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{(1-2 x)^{3/2}} \, dx=\frac {1350 \, {\left (90 \, x^{2} + 328 \, x - 799\right )} \sqrt {5 \, x + 3} \sqrt {3 \, x + 2} \sqrt {-2 \, x + 1} + 494651 \, \sqrt {-30} {\left (2 \, x - 1\right )} {\rm weierstrassPInverse}\left (\frac {1159}{675}, \frac {38998}{91125}, x + \frac {23}{90}\right ) - 1310220 \, \sqrt {-30} {\left (2 \, x - 1\right )} {\rm weierstrassZeta}\left (\frac {1159}{675}, \frac {38998}{91125}, {\rm weierstrassPInverse}\left (\frac {1159}{675}, \frac {38998}{91125}, x + \frac {23}{90}\right )\right )}{67500 \, {\left (2 \, x - 1\right )}} \] Input:
integrate((2+3*x)^(5/2)*(3+5*x)^(1/2)/(1-2*x)^(3/2),x, algorithm="fricas")
Output:
1/67500*(1350*(90*x^2 + 328*x - 799)*sqrt(5*x + 3)*sqrt(3*x + 2)*sqrt(-2*x + 1) + 494651*sqrt(-30)*(2*x - 1)*weierstrassPInverse(1159/675, 38998/911 25, x + 23/90) - 1310220*sqrt(-30)*(2*x - 1)*weierstrassZeta(1159/675, 389 98/91125, weierstrassPInverse(1159/675, 38998/91125, x + 23/90)))/(2*x - 1 )
\[ \int \frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{(1-2 x)^{3/2}} \, dx=\int \frac {\left (3 x + 2\right )^{\frac {5}{2}} \sqrt {5 x + 3}}{\left (1 - 2 x\right )^{\frac {3}{2}}}\, dx \] Input:
integrate((2+3*x)**(5/2)*(3+5*x)**(1/2)/(1-2*x)**(3/2),x)
Output:
Integral((3*x + 2)**(5/2)*sqrt(5*x + 3)/(1 - 2*x)**(3/2), x)
\[ \int \frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{(1-2 x)^{3/2}} \, dx=\int { \frac {\sqrt {5 \, x + 3} {\left (3 \, x + 2\right )}^{\frac {5}{2}}}{{\left (-2 \, x + 1\right )}^{\frac {3}{2}}} \,d x } \] Input:
integrate((2+3*x)^(5/2)*(3+5*x)^(1/2)/(1-2*x)^(3/2),x, algorithm="maxima")
Output:
integrate(sqrt(5*x + 3)*(3*x + 2)^(5/2)/(-2*x + 1)^(3/2), x)
\[ \int \frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{(1-2 x)^{3/2}} \, dx=\int { \frac {\sqrt {5 \, x + 3} {\left (3 \, x + 2\right )}^{\frac {5}{2}}}{{\left (-2 \, x + 1\right )}^{\frac {3}{2}}} \,d x } \] Input:
integrate((2+3*x)^(5/2)*(3+5*x)^(1/2)/(1-2*x)^(3/2),x, algorithm="giac")
Output:
integrate(sqrt(5*x + 3)*(3*x + 2)^(5/2)/(-2*x + 1)^(3/2), x)
Timed out. \[ \int \frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{(1-2 x)^{3/2}} \, dx=\int \frac {{\left (3\,x+2\right )}^{5/2}\,\sqrt {5\,x+3}}{{\left (1-2\,x\right )}^{3/2}} \,d x \] Input:
int(((3*x + 2)^(5/2)*(5*x + 3)^(1/2))/(1 - 2*x)^(3/2),x)
Output:
int(((3*x + 2)^(5/2)*(5*x + 3)^(1/2))/(1 - 2*x)^(3/2), x)
\[ \int \frac {(2+3 x)^{5/2} \sqrt {3+5 x}}{(1-2 x)^{3/2}} \, dx=\frac {270 \sqrt {3 x +2}\, \sqrt {5 x +3}\, \sqrt {-2 x +1}\, x^{2}+984 \sqrt {3 x +2}\, \sqrt {5 x +3}\, \sqrt {-2 x +1}\, x -3172 \sqrt {3 x +2}\, \sqrt {5 x +3}\, \sqrt {-2 x +1}+197946 \left (\int \frac {\sqrt {3 x +2}\, \sqrt {5 x +3}\, \sqrt {-2 x +1}\, x^{2}}{60 x^{4}+16 x^{3}-37 x^{2}-5 x +6}d x \right ) x -98973 \left (\int \frac {\sqrt {3 x +2}\, \sqrt {5 x +3}\, \sqrt {-2 x +1}\, x^{2}}{60 x^{4}+16 x^{3}-37 x^{2}-5 x +6}d x \right )-79324 \left (\int \frac {\sqrt {3 x +2}\, \sqrt {5 x +3}\, \sqrt {-2 x +1}}{60 x^{4}+16 x^{3}-37 x^{2}-5 x +6}d x \right ) x +39662 \left (\int \frac {\sqrt {3 x +2}\, \sqrt {5 x +3}\, \sqrt {-2 x +1}}{60 x^{4}+16 x^{3}-37 x^{2}-5 x +6}d x \right )}{300 x -150} \] Input:
int((2+3*x)^(5/2)*(3+5*x)^(1/2)/(1-2*x)^(3/2),x)
Output:
(270*sqrt(3*x + 2)*sqrt(5*x + 3)*sqrt( - 2*x + 1)*x**2 + 984*sqrt(3*x + 2) *sqrt(5*x + 3)*sqrt( - 2*x + 1)*x - 3172*sqrt(3*x + 2)*sqrt(5*x + 3)*sqrt( - 2*x + 1) + 197946*int((sqrt(3*x + 2)*sqrt(5*x + 3)*sqrt( - 2*x + 1)*x** 2)/(60*x**4 + 16*x**3 - 37*x**2 - 5*x + 6),x)*x - 98973*int((sqrt(3*x + 2) *sqrt(5*x + 3)*sqrt( - 2*x + 1)*x**2)/(60*x**4 + 16*x**3 - 37*x**2 - 5*x + 6),x) - 79324*int((sqrt(3*x + 2)*sqrt(5*x + 3)*sqrt( - 2*x + 1))/(60*x**4 + 16*x**3 - 37*x**2 - 5*x + 6),x)*x + 39662*int((sqrt(3*x + 2)*sqrt(5*x + 3)*sqrt( - 2*x + 1))/(60*x**4 + 16*x**3 - 37*x**2 - 5*x + 6),x))/(150*(2* x - 1))