2.2.208 Problems 20701 to 20800

Table 2.433: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

20701

\begin{align*} y^{\prime \prime }+n^{2} y&=\sec \left (n x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

1.957

20702

\begin{align*} y^{\prime \prime \prime }+y&=\left (1+{\mathrm e}^{x}\right )^{2} \\ \end{align*}

[[_3rd_order, _linear, _nonhomogeneous]]

0.182

20703

\begin{align*} y^{\prime \prime }-4 y^{\prime }+y&=a \cos \left (2 x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

0.543

20704

\begin{align*} y^{\prime \prime \prime }+a^{2} y^{\prime }&=\sin \left (a x \right ) \\ \end{align*}

[[_3rd_order, _missing_y]]

0.459

20705

\begin{align*} y^{\prime \prime \prime }-3 y^{\prime \prime }+4 y^{\prime }-2 y&={\mathrm e}^{x}+\cos \left (x \right ) \\ \end{align*}

[[_3rd_order, _linear, _nonhomogeneous]]

0.221

20706

\begin{align*} y-2 y^{\prime }+y^{\prime \prime }&=x \sin \left (x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

0.707

20707

\begin{align*} y^{\prime \prime \prime }+3 y^{\prime \prime }+2 y^{\prime }&=x^{2} \\ \end{align*}

[[_3rd_order, _missing_y]]

0.141

20708

\begin{align*} y-2 y^{\prime }+y^{\prime \prime }&=x^{2} {\mathrm e}^{3 x} \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

0.570

20709

\begin{align*} y^{\prime \prime }+4 y^{\prime }+4 y&=2 \sinh \left (2 x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

0.740

20710

\begin{align*} y^{\prime \prime }+a^{2} y&=\cos \left (a x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

2.006

20711

\begin{align*} y-2 y^{\prime }+y^{\prime \prime }&=x \sin \left (x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

0.639

20712

\begin{align*} {y^{\prime }}^{3}-\left (x^{2}+y x +y^{2}\right ) {y^{\prime }}^{2}+\left (x y^{3}+x^{2} y^{2}+x^{3} y\right ) y^{\prime }-x^{3} y^{3}&=0 \\ \end{align*}

[_quadrature]

0.632

20713

\begin{align*} x^{2} \left ({y^{\prime }}^{2}-y^{2}\right )+y^{2}&=x^{4}+2 x y y^{\prime } \\ \end{align*}

[_rational, [_1st_order, ‘_with_symmetry_[F(x),G(x)*y+H(x)]‘]]

10.946

20714

\begin{align*} \left (a^{2}-x^{2}\right ) {y^{\prime }}^{3}+b x \left (a^{2}-x^{2}\right ) {y^{\prime }}^{2}-y^{\prime }-b x&=0 \\ \end{align*}

[_quadrature]

0.921

20715

\begin{align*} \left (x +2 y\right ) {y^{\prime }}^{3}+3 \left (x +y\right ) {y^{\prime }}^{2}+\left (2 x +y\right ) y^{\prime }&=0 \\ \end{align*}

[_quadrature]

2.010

20716

\begin{align*} y-\frac {1}{\sqrt {1+{y^{\prime }}^{2}}}&=b \\ \end{align*}

[_quadrature]

2.918

20717

\begin{align*} y&=\frac {x}{y^{\prime }}-a y^{\prime } \\ \end{align*}

[_dAlembert]

72.451

20718

\begin{align*} {y^{\prime }}^{3}+m {y^{\prime }}^{2}&=a \left (y+m x \right ) \\ \end{align*}

[[_homogeneous, ‘class C‘], _dAlembert]

31.217

20719

\begin{align*} x {y^{\prime }}^{3}&=a +b y^{\prime } \\ \end{align*}

[_quadrature]

0.994

20720

\begin{align*} y^{\prime }&=\tan \left (x -\frac {y^{\prime }}{1+{y^{\prime }}^{2}}\right ) \\ \end{align*}

[_quadrature]

1.303

20721

\begin{align*} a y {y^{\prime }}^{2}+\left (2 x -b \right ) y^{\prime }-y&=0 \\ \end{align*}

[[_homogeneous, ‘class C‘], _rational, _dAlembert]

2.901

20722

\begin{align*} y&=x \left (y^{\prime }+1\right )+{y^{\prime }}^{2} \\ \end{align*}

[[_1st_order, _with_linear_symmetries], _dAlembert]

1.295

20723

\begin{align*} {\mathrm e}^{3 x} \left (y^{\prime }-1\right )+{\mathrm e}^{2 y} {y^{\prime }}^{3}&=0 \\ \end{align*}

[[_1st_order, ‘_with_symmetry_[F(x),G(y)]‘], _dAlembert]

96.226

20724

\begin{align*} y&=2 x y^{\prime }+y^{2} {y^{\prime }}^{3} \\ \end{align*}

[[_1st_order, _with_linear_symmetries]]

0.613

20725

\begin{align*} y&=-x y^{\prime }+x^{4} {y^{\prime }}^{2} \\ \end{align*}

[[_homogeneous, ‘class G‘], _rational]

2.240

20726

\begin{align*} y-2 x y^{\prime }+a y {y^{\prime }}^{2}&=0 \\ \end{align*}

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

1.917

20727

\begin{align*} x^{2} \left (-x y^{\prime }+y\right )&=y {y^{\prime }}^{2} \\ \end{align*}

[[_1st_order, _with_linear_symmetries]]

1.572

20728

\begin{align*} x y \left (-x y^{\prime }+y\right )&=y y^{\prime }+x \\ \end{align*}

[_separable]

6.948

20729

\begin{align*} x y^{2} \left ({y^{\prime }}^{2}+2\right )&=2 y^{3} y^{\prime }+x^{3} \\ \end{align*}

[_separable]

1.454

20730

\begin{align*} 3 y {y^{\prime }}^{2}-2 x y y^{\prime }+4 y^{2}-x^{2}&=0 \\ \end{align*}

[_rational]

255.404

20731

\begin{align*} \left (y y^{\prime }+n x \right )^{2}&=\left (y^{2}+n \,x^{2}\right ) \left (1+{y^{\prime }}^{2}\right ) \\ \end{align*}

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

10.938

20732

\begin{align*} \left (1-y^{2}+\frac {y^{4}}{x^{2}}\right ) {y^{\prime }}^{2}-\frac {2 y y^{\prime }}{x}+\frac {y^{2}}{x^{2}}&=0 \\ \end{align*}

[‘y=_G(x,y’)‘]

293.472

20733

\begin{align*} \left (x^{2}+y^{2}\right ) \left (y^{\prime }+1\right )^{2}-2 \left (x +y\right ) \left (y^{\prime }+1\right ) \left (y y^{\prime }+x \right )+\left (y y^{\prime }+x \right )^{2}&=0 \\ \end{align*}

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

121.760

20734

\begin{align*} \left (-x^{2}+1\right ) {y^{\prime }}^{2}&=1-y^{2} \\ \end{align*}

[_rational, [_1st_order, ‘_with_symmetry_[F(x),G(x)*y+H(x)]‘]]

2.612

20735

\begin{align*} y^{2} \left (1+{y^{\prime }}^{2}\right )&=r^{2} \\ \end{align*}

[_quadrature]

0.832

20736

\begin{align*} \sin \left (x y^{\prime }\right ) \cos \left (y\right )&=\cos \left (x y^{\prime }\right ) \sin \left (y\right )+y^{\prime } \\ \end{align*}

[[_1st_order, ‘_with_symmetry_[F(x),G(y)]‘]]

6.083

20737

\begin{align*} 4 {y^{\prime }}^{2} x&=\left (3 x -a \right )^{2} \\ \end{align*}

[_quadrature]

2.270

20738

\begin{align*} 4 {y^{\prime }}^{2} x \left (x -a \right ) \left (x -b \right )&=\left (3 x^{2}-2 x \left (a +b \right )+a b \right )^{2} \\ \end{align*}

[_quadrature]

0.660

20739

\begin{align*} {y^{\prime }}^{3}-4 x y y^{\prime }+8 y^{2}&=0 \\ \end{align*}

[[_1st_order, _with_linear_symmetries]]

0.603

20740

\begin{align*} {y^{\prime }}^{2}+2 x y^{\prime }-y&=0 \\ \end{align*}

[[_1st_order, _with_linear_symmetries], _dAlembert]

2.158

20741

\begin{align*} x^{3} {y^{\prime }}^{2}+x^{2} y y^{\prime }+a^{3}&=0 \\ \end{align*}

[[_homogeneous, ‘class G‘]]

2.789

20742

\begin{align*} x^{2} {y^{\prime }}^{3}+\left (2 x +y\right ) y y^{\prime }+y^{2}&=0 \\ \end{align*}

[[_1st_order, _with_linear_symmetries], _dAlembert]

52.036

20743

\begin{align*} {y^{\prime }}^{2} x -2 y y^{\prime }+x +2 y&=0 \\ \end{align*}

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

2.849

20744

\begin{align*} {y^{\prime }}^{2} y^{2} \cos \left (a \right )^{2}-2 y^{\prime } x y \sin \left (a \right )^{2}+y^{2}-x^{2} \sin \left (a \right )^{2}&=0 \\ \end{align*}

[[_homogeneous, ‘class A‘], _rational, _dAlembert]

77.649

20745

\begin{align*} \left (2 x^{2}+1\right ) {y^{\prime }}^{2}+\left (y^{2}+2 y x +x^{2}+2\right ) y^{\prime }+2 y^{2}+1&=0 \\ \end{align*}

[‘y=_G(x,y’)‘]

120.121

20746

\begin{align*} y x -x^{2} y^{\prime }+2 x^{3} y^{\prime \prime }+x^{4} y^{\prime \prime \prime }&=1 \\ \end{align*}

[[_3rd_order, _with_linear_symmetries]]

0.336

20747

\begin{align*} x^{2} y^{\prime \prime }-2 y&=x^{2}+\frac {1}{x} \\ \end{align*}

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

0.921

20748

\begin{align*} -2 y+2 x y^{\prime }-x^{2} y^{\prime \prime }+x^{3} y^{\prime \prime \prime }&=x^{2}+3 x \\ \end{align*}

[[_3rd_order, _with_linear_symmetries]]

0.398

20749

\begin{align*} x^{3} y^{\prime \prime \prime }+6 x^{2} y^{\prime \prime }+4 x y^{\prime }-4 y&=0 \\ \end{align*}

[[_3rd_order, _with_linear_symmetries]]

0.162

20750

\begin{align*} x^{3} y^{\prime \prime \prime }+3 x^{2} y^{\prime \prime }+x y^{\prime }+y&=0 \\ \end{align*}

[[_3rd_order, _exact, _linear, _homogeneous]]

0.171

20751

\begin{align*} x^{2} y^{\prime \prime }-3 x y^{\prime }+4 y&=2 x^{2} \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

5.528

20752

\begin{align*} 2 y+2 x^{2} y^{\prime \prime }+x^{3} y^{\prime \prime \prime }&=10 x +\frac {10}{x} \\ \end{align*}

[[_3rd_order, _exact, _linear, _nonhomogeneous]]

0.694

20753

\begin{align*} x^{2} y^{\prime \prime }+3 x y^{\prime }+y&=\frac {1}{\left (1-x \right )^{2}} \\ \end{align*}

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

5.227

20754

\begin{align*} \left (2 x -1\right )^{3} y^{\prime \prime \prime }+\left (2 x -1\right ) y^{\prime }-2 y&=0 \\ \end{align*}

[[_3rd_order, _with_linear_symmetries]]

0.056

20755

\begin{align*} 6 y-4 \left (x +a \right ) y^{\prime }+\left (x +a \right )^{2} y^{\prime \prime }&=x \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

2.832

20756

\begin{align*} 16 \left (x +1\right )^{4} y^{\prime \prime \prime \prime }+96 \left (x +1\right )^{3} y^{\prime \prime \prime }+104 \left (x +1\right )^{2} y^{\prime \prime }+8 \left (x +1\right ) y^{\prime }+y&=x^{2}+4 x +3 \\ \end{align*}

[[_high_order, _with_linear_symmetries]]

0.076

20757

\begin{align*} \left (x +1\right )^{2} y^{\prime \prime }+\left (x +1\right ) y^{\prime }+y&=4 \cos \left (\ln \left (x +1\right )\right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

10.775

20758

\begin{align*} 2 x^{2} y y^{\prime \prime }+4 y^{2}&={y^{\prime }}^{2} x^{2}+2 x y y^{\prime } \\ \end{align*}

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_xy]]

2.361

20759

\begin{align*} x^{2} y^{\prime \prime }-\left (2 m -1\right ) x y^{\prime }+\left (m^{2}+n^{2}\right ) y&=n^{2} x^{m} \ln \left (x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

2.802

20760

\begin{align*} x^{2} y^{\prime \prime }-3 x y^{\prime }+y&=\frac {\ln \left (x \right ) \sin \left (\ln \left (x \right )\right )+1}{x} \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

30.559

20761

\begin{align*} \left (x^{2}+x +1\right ) y^{\prime \prime \prime }+\left (3+6 x \right ) y^{\prime \prime }+6 y^{\prime }&=0 \\ \end{align*}

[[_3rd_order, _missing_y]]

0.293

20762

\begin{align*} \left (x^{3}-x \right ) y^{\prime \prime \prime }+\left (8 x^{2}-3\right ) y^{\prime \prime }+14 x y^{\prime }+4 y&=\frac {2}{x^{3}} \\ \end{align*}

[[_3rd_order, _fully, _exact, _linear]]

0.362

20763

\begin{align*} y^{\prime \prime \prime }+\cos \left (x \right ) y^{\prime \prime }-2 \sin \left (x \right ) y^{\prime }-\cos \left (x \right ) y&=\sin \left (2 x \right ) \\ \end{align*}

[[_3rd_order, _fully, _exact, _linear]]

0.260

20764

\begin{align*} \sqrt {x}\, y^{\prime \prime }+2 x y^{\prime }+3 y&=x \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

14.022

20765

\begin{align*} 2 x^{2} \left (x +1\right ) y^{\prime \prime }+x \left (3+7 x \right ) y^{\prime }-3 y&=x^{2} \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

0.570

20766

\begin{align*} 2 x^{2} \cos \left (y\right ) y^{\prime \prime }-2 x^{2} \sin \left (y\right ) {y^{\prime }}^{2}+x \cos \left (y\right ) y^{\prime }-\sin \left (y\right )&=\ln \left (x \right ) \\ \end{align*}

[[_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_xy]]

30.802

20767

\begin{align*} x^{2} y y^{\prime \prime }+\left (x y^{\prime }-y\right )^{2}-3 y^{2}&=0 \\ \end{align*}

[[_2nd_order, _exact, _nonlinear], [_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_xy]]

0.694

20768

\begin{align*} y+3 x y^{\prime }+2 y {y^{\prime }}^{2}+\left (x^{2}+2 y^{2} y^{\prime }\right ) y^{\prime \prime }&=0 \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

5.251

20769

\begin{align*} \left (y^{2}+2 x^{2} y^{\prime }\right ) y^{\prime \prime }+2 \left (x +y\right ) {y^{\prime }}^{2}+x y^{\prime }+y&=0 \\ \end{align*}

[[_2nd_order, _exact, _nonlinear], [_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_poly_yn]]

116.104

20770

\begin{align*} y^{\prime \prime \prime }&=x \,{\mathrm e}^{x} \\ \end{align*}

[[_3rd_order, _quadrature]]

0.110

20771

\begin{align*} y^{\prime \prime }&=x^{2} \sin \left (x \right ) \\ \end{align*}

[[_2nd_order, _quadrature]]

1.116

20772

\begin{align*} y^{\prime \prime }&=\sec \left (x \right )^{2} \\ \end{align*}

[[_2nd_order, _quadrature]]

1.158

20773

\begin{align*} y^{\prime }+{y^{\prime }}^{3}+y^{\prime \prime }&=0 \\ \end{align*}

[[_2nd_order, _missing_x]]

3.451

20774

\begin{align*} \left (x^{2}+1\right ) y^{\prime \prime }+1+{y^{\prime }}^{2}&=0 \\ \end{align*}

[[_2nd_order, _missing_y], [_2nd_order, _reducible, _mu_y_y1]]

0.661

20775

\begin{align*} \left (1+\ln \left (y\right )\right ) {y^{\prime }}^{2}+\left (1-\ln \left (y\right )\right ) y y^{\prime \prime }&=0 \\ \end{align*}

[[_2nd_order, _missing_x], _Liouville, [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_xy]]

1.029

20776

\begin{align*} y y^{\prime \prime }-{y^{\prime }}^{2}&=\ln \left (y\right ) y^{2} \\ \end{align*}

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_xy]]

3.869

20777

\begin{align*} y^{\prime }-y y^{\prime \prime }&=n \sqrt {{y^{\prime }}^{2}+a^{2} y^{\prime \prime }} \\ \end{align*}

[[_2nd_order, _missing_x]]

1118.642

20778

\begin{align*} x y^{\prime \prime }+y^{\prime }&=0 \\ \end{align*}

[[_2nd_order, _missing_y]]

0.977

20779

\begin{align*} y^{\prime \prime \prime \prime }-a^{2} y^{\prime \prime }&=0 \\ \end{align*}

[[_high_order, _missing_x]]

0.067

20780

\begin{align*} x^{4} y^{\prime \prime }&=\left (-x y^{\prime }+y\right )^{3} \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

7.864

20781

\begin{align*} 2 y^{\prime }+x y^{\prime \prime }&=-y^{2}+x^{2} y^{\prime } \\ \end{align*}

[NONE]

4.851

20782

\begin{align*} x y^{\prime \prime }-\left (2 x -1\right ) y^{\prime }+\left (x -1\right ) y&=0 \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

0.446

20783

\begin{align*} \sin \left (x \right )^{2} y^{\prime \prime }&=2 y \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

1.246

20784

\begin{align*} -y+x y^{\prime }+\left (-x^{2}+1\right ) y^{\prime \prime }&=x \left (-x^{2}+1\right )^{{3}/{2}} \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

2.553

20785

\begin{align*} \left (x +2\right ) y^{\prime \prime }-\left (5+2 x \right ) y^{\prime }+2 y&={\mathrm e}^{x} \left (x +1\right ) \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

1.257

20786

\begin{align*} y^{\prime \prime }-\cot \left (x \right ) y^{\prime }-\left (1-\cot \left (x \right )\right ) y&={\mathrm e}^{x} \sin \left (x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

17.523

20787

\begin{align*} \left (x \sin \left (x \right )+\cos \left (x \right )\right ) y^{\prime \prime }-x \cos \left (x \right ) y^{\prime }+\cos \left (x \right ) y&=0 \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

1.188

20788

\begin{align*} y^{\prime \prime }+\left (1+\frac {2 \cot \left (x \right )}{x}-\frac {2}{x^{2}}\right ) y&=x \cos \left (x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

15.822

20789

\begin{align*} x^{2} y^{\prime \prime }-2 \left (x^{2}+x \right ) y^{\prime }+\left (x^{2}+2 x +2\right ) y&=0 \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

0.537

20790

\begin{align*} x^{2} y^{\prime \prime }-2 x y^{\prime }+\left (x^{2}+2\right ) y&=0 \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

0.785

20791

\begin{align*} y^{\prime \prime }+\frac {y^{\prime }}{x^{{1}/{3}}}+\left (\frac {1}{4 x^{{2}/{3}}}-\frac {1}{6 x^{{4}/{3}}}-\frac {6}{x^{2}}\right ) y&=0 \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

0.629

20792

\begin{align*} y^{\prime \prime }-2 \tan \left (x \right ) y^{\prime }+y&=0 \\ \end{align*}

[_Lienard]

0.813

20793

\begin{align*} y^{\prime \prime }-4 x y^{\prime }+\left (4 x^{2}-1\right ) y&=-3 \,{\mathrm e}^{x^{2}} \sin \left (2 x \right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

1.125

20794

\begin{align*} y^{\prime \prime }-\left (8 \,{\mathrm e}^{2 x}+2\right ) y^{\prime }+4 \,{\mathrm e}^{4 x} y&={\mathrm e}^{6 x} \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

4.248

20795

\begin{align*} y^{\prime \prime }+\cot \left (x \right ) y^{\prime }+\frac {\csc \left (x \right )^{2} y}{2}&=0 \\ \end{align*}

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

3.491

20796

\begin{align*} x^{6} y^{\prime \prime }+3 x^{5} y^{\prime }+a^{2} y&=\frac {1}{x^{2}} \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

3.283

20797

\begin{align*} x y^{\prime \prime }-y^{\prime }-4 x^{3} y&=8 x^{3} \sin \left (x^{2}\right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

4.401

20798

\begin{align*} \cos \left (x \right ) y^{\prime \prime }+\sin \left (x \right ) y^{\prime }-2 \cos \left (x \right )^{3} y&=2 \cos \left (x \right )^{5} \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

6.667

20799

\begin{align*} \left (x +1\right )^{2} y^{\prime \prime }+\left (x +1\right ) y^{\prime }+y&=4 \cos \left (\ln \left (x +1\right )\right ) \\ \end{align*}

[[_2nd_order, _linear, _nonhomogeneous]]

16.227

20800

\begin{align*} x y^{\prime \prime }+\left (x -1\right ) y^{\prime }-y&=x^{2} \\ \end{align*}

[[_2nd_order, _with_linear_symmetries]]

1.296