2.2.9 Problems 801 to 900

Table 2.19: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

801

\[ {}y^{\prime } = 3 \left (y+7\right ) x^{2} \]

[_separable]

2.004

802

\[ {}y^{\prime } = x y^{3}-x y \]

[_separable]

11.975

803

\[ {}y^{\prime } = \frac {-3 x^{2}-2 y^{2}}{4 x y} \]

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

507.441

804

\[ {}y^{\prime } = \frac {x +3 y}{y-3 x} \]

[[_homogeneous, ‘class A‘], _rational, [_Abel, ‘2nd type‘, ‘class A‘]]

26.167

805

\[ {}y^{\prime } = \frac {2 x y+2 x}{x^{2}+1} \]

[_separable]

4.177

806

\[ {}y^{\prime } = \cot \left (x \right ) \left (\sqrt {y}-y\right ) \]

[_separable]

24.442

807

\[ {}y^{\prime \prime }-y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

3.773

808

\[ {}y^{\prime \prime }-9 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

5.209

809

\[ {}y^{\prime \prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

3.531

810

\[ {}y^{\prime \prime }+25 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

3.329

811

\[ {}y^{\prime \prime }-3 y^{\prime }+2 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.034

812

\[ {}y^{\prime \prime }+y^{\prime }-6 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.066

813

\[ {}y^{\prime \prime }+y^{\prime } = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.871

814

\[ {}y^{\prime \prime }-3 y^{\prime } = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.541

815

\[ {}y^{\prime \prime }+2 y^{\prime }+y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.128

816

\[ {}y^{\prime \prime }-10 y^{\prime }+25 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.214

817

\[ {}y^{\prime \prime }-2 y^{\prime }+2 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.626

818

\[ {}y^{\prime \prime }+6 y^{\prime }+13 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.734

819

\[ {}x^{2} y^{\prime \prime }-2 y^{\prime } x +2 y = 0 \]
i.c.

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

2.023

820

\[ {}x^{2} y^{\prime \prime }+2 y^{\prime } x -6 y = 0 \]
i.c.

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

1.369

821

\[ {}x^{2} y^{\prime \prime }-y^{\prime } x +y = 0 \]
i.c.

[[_Emden, _Fowler]]

1.823

822

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x +y = 0 \]
i.c.

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

1.767

823

\[ {}y^{\prime \prime }-3 y^{\prime }+2 y = 0 \]

[[_2nd_order, _missing_x]]

0.972

824

\[ {}y^{\prime \prime }+2 y^{\prime }-15 y = 0 \]

[[_2nd_order, _missing_x]]

0.740

825

\[ {}y^{\prime \prime }+5 y^{\prime } = 0 \]

[[_2nd_order, _missing_x]]

2.017

826

\[ {}2 y^{\prime \prime }+3 y^{\prime } = 0 \]

[[_2nd_order, _missing_x]]

2.585

827

\[ {}2 y^{\prime \prime }-y^{\prime }-y = 0 \]

[[_2nd_order, _missing_x]]

0.719

828

\[ {}4 y^{\prime \prime }+8 y^{\prime }+3 y = 0 \]

[[_2nd_order, _missing_x]]

0.771

829

\[ {}4 y^{\prime \prime }+4 y^{\prime }+y = 0 \]

[[_2nd_order, _missing_x]]

0.951

830

\[ {}9 y^{\prime \prime }-12 y^{\prime }+4 y = 0 \]

[[_2nd_order, _missing_x]]

0.906

831

\[ {}6 y^{\prime \prime }-7 y^{\prime }-20 y = 0 \]

[[_2nd_order, _missing_x]]

0.963

832

\[ {}35 y^{\prime \prime }-y^{\prime }-12 y = 0 \]

[[_2nd_order, _missing_x]]

1.670

833

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x -y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.989

834

\[ {}x^{2} y^{\prime \prime }+2 y^{\prime } x -12 y = 0 \]

[[_Emden, _Fowler]]

0.946

835

\[ {}4 x^{2} y^{\prime \prime }+8 y^{\prime } x -3 y = 0 \]

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

0.838

836

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x = 0 \]

[[_2nd_order, _missing_y]]

0.568

837

\[ {}x^{2} y^{\prime \prime }-3 y^{\prime } x +4 y = 0 \]

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

2.547

838

\[ {}y^{\prime \prime }+y = 3 x \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

2.341

839

\[ {}y^{\prime \prime }-4 y = 12 \]
i.c.

[[_2nd_order, _missing_x]]

6.126

840

\[ {}y^{\prime \prime }-2 y^{\prime }-3 y = 6 \]
i.c.

[[_2nd_order, _missing_x]]

1.158

841

\[ {}y^{\prime \prime }-2 y^{\prime }+2 y = 2 x \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

8.712

842

\[ {}y^{\prime \prime }+2 y = 4 \]

[[_2nd_order, _missing_x]]

4.623

843

\[ {}y^{\prime \prime }+2 y = 6 x \]

[[_2nd_order, _with_linear_symmetries]]

3.637

844

\[ {}y^{\prime \prime }+2 y = 6 x +4 \]

[[_2nd_order, _with_linear_symmetries]]

3.419

845

\[ {}y^{\prime \prime }-4 y = 0 \]

[[_2nd_order, _missing_x]]

5.301

846

\[ {}2 y^{\prime \prime }-3 y^{\prime } = 0 \]

[[_2nd_order, _missing_x]]

2.234

847

\[ {}y^{\prime \prime }+3 y^{\prime }-10 y = 0 \]

[[_2nd_order, _missing_x]]

1.910

848

\[ {}2 y^{\prime \prime }-7 y^{\prime }+3 y = 0 \]

[[_2nd_order, _missing_x]]

1.022

849

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 0 \]

[[_2nd_order, _missing_x]]

1.019

850

\[ {}y^{\prime \prime }+5 y^{\prime }+5 y = 0 \]

[[_2nd_order, _missing_x]]

1.525

851

\[ {}4 y^{\prime \prime }-12 y^{\prime }+9 y = 0 \]

[[_2nd_order, _missing_x]]

0.843

852

\[ {}y^{\prime \prime }-6 y^{\prime }+13 y = 0 \]

[[_2nd_order, _missing_x]]

2.061

853

\[ {}y^{\prime \prime }+8 y^{\prime }+25 y = 0 \]

[[_2nd_order, _missing_x]]

2.056

854

\[ {}y^{\prime \prime }-4 y^{\prime }+3 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.213

855

\[ {}9 y^{\prime \prime }+6 y^{\prime }+4 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

3.050

856

\[ {}y^{\prime \prime }-6 y^{\prime }+25 y = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.872

857

\[ {}y^{\prime \prime }-2 i y^{\prime }+3 y = 0 \]

[[_2nd_order, _missing_x]]

0.769

858

\[ {}y^{\prime \prime }-i y^{\prime }+6 y = 0 \]

[[_2nd_order, _missing_x]]

0.795

859

\[ {}y^{\prime \prime } = \left (-2+2 i \sqrt {3}\right ) y \]

[[_2nd_order, _missing_x]]

4.660

860

\[ {}x^{2} y^{\prime \prime }+y^{\prime } x +9 y = 0 \]

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

1.383

861

\[ {}x^{2} y^{\prime \prime }+7 y^{\prime } x +25 y = 0 \]

[[_Emden, _Fowler]]

2.475

862

\[ {}\frac {x^{\prime \prime }}{2}+3 x^{\prime }+4 x = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.015

863

\[ {}3 x^{\prime \prime }+30 x^{\prime }+63 x = 0 \]
i.c.

[[_2nd_order, _missing_x]]

1.796

864

\[ {}x^{\prime \prime }+8 x^{\prime }+16 x = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.145

865

\[ {}2 x^{\prime \prime }+12 x^{\prime }+50 x = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.232

866

\[ {}4 x^{\prime \prime }+20 x^{\prime }+169 x = 0 \]
i.c.

[[_2nd_order, _missing_x]]

3.019

867

\[ {}2 x^{\prime \prime }+16 x^{\prime }+40 x = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.761

868

\[ {}x^{\prime \prime }+10 x^{\prime }+125 x = 0 \]
i.c.

[[_2nd_order, _missing_x]]

2.914

869

\[ {}y^{\prime \prime }+16 y = {\mathrm e}^{3 x} \]

[[_2nd_order, _with_linear_symmetries]]

2.597

870

\[ {}y^{\prime \prime }-y^{\prime }-2 y = 3 x +4 \]

[[_2nd_order, _with_linear_symmetries]]

1.875

871

\[ {}y^{\prime \prime }-y^{\prime }-6 y = 2 \sin \left (3 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.777

872

\[ {}4 y^{\prime \prime }+4 y^{\prime }+y = 3 x \,{\mathrm e}^{x} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.693

873

\[ {}y^{\prime \prime }+y^{\prime }+y = \sin \left (x \right )^{2} \]

[[_2nd_order, _linear, _nonhomogeneous]]

76.313

874

\[ {}2 y^{\prime \prime }+4 y^{\prime }+7 y = x^{2} \]

[[_2nd_order, _with_linear_symmetries]]

24.411

875

\[ {}y^{\prime \prime }-4 y = \sinh \left (x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

8.852

876

\[ {}y^{\prime \prime }-4 y = \cosh \left (2 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

14.073

877

\[ {}y^{\prime \prime }+2 y^{\prime }-3 y = 1+x \,{\mathrm e}^{x} \]

[[_2nd_order, _linear, _nonhomogeneous]]

2.447

878

\[ {}y^{\prime \prime }+9 y = 2 \cos \left (3 x \right )+3 \sin \left (3 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

4.090

879

\[ {}y^{\prime \prime }+9 y = 2 x^{2} {\mathrm e}^{3 x}+5 \]

[[_2nd_order, _linear, _nonhomogeneous]]

3.794

880

\[ {}y^{\prime \prime }-2 y^{\prime }+2 y = {\mathrm e}^{x} \sin \left (x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

5.533

881

\[ {}y^{\prime \prime }+4 y = 3 x \cos \left (2 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

6.092

882

\[ {}y^{\prime \prime }+3 y^{\prime }+2 y = x \left ({\mathrm e}^{-x}-{\mathrm e}^{-2 x}\right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

2.754

883

\[ {}y^{\prime \prime }-6 y^{\prime }+13 y = x \,{\mathrm e}^{3 x} \sin \left (2 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

15.481

884

\[ {}y^{\prime \prime }+4 y = 2 x \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

3.683

885

\[ {}y^{\prime \prime }+3 y^{\prime }+2 y = {\mathrm e}^{x} \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

2.431

886

\[ {}y^{\prime \prime }+9 y = \sin \left (2 x \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

3.899

887

\[ {}y^{\prime \prime }+y = \cos \left (x \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

3.540

888

\[ {}y^{\prime \prime }-2 y^{\prime }+2 y = x +1 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

9.296

889

\[ {}y^{\prime \prime }+y^{\prime }+y = \sin \left (x \right ) \sin \left (3 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

76.619

890

\[ {}y^{\prime \prime }+9 y = \sin \left (x \right )^{4} \]

[[_2nd_order, _linear, _nonhomogeneous]]

4.088

891

\[ {}y^{\prime \prime }+y = x \cos \left (x \right )^{3} \]

[[_2nd_order, _linear, _nonhomogeneous]]

6.554

892

\[ {}y^{\prime \prime }+3 y^{\prime }+2 y = 4 \,{\mathrm e}^{x} \]

[[_2nd_order, _with_linear_symmetries]]

1.679

893

\[ {}y^{\prime \prime }-2 y^{\prime }-8 y = 3 \,{\mathrm e}^{-2 x} \]

[[_2nd_order, _with_linear_symmetries]]

1.575

894

\[ {}y^{\prime \prime }-4 y^{\prime }+4 y = 2 \,{\mathrm e}^{2 x} \]

[[_2nd_order, _with_linear_symmetries]]

2.116

895

\[ {}y^{\prime \prime }-4 y = \sinh \left (2 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

17.081

896

\[ {}y^{\prime \prime }+4 y = \cos \left (3 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

3.207

897

\[ {}y^{\prime \prime }+9 y = \sin \left (3 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

3.885

898

\[ {}y^{\prime \prime }+9 y = 2 \sec \left (3 x \right ) \]

[[_2nd_order, _linear, _nonhomogeneous]]

3.726

899

\[ {}y^{\prime \prime }+y = \csc \left (x \right )^{2} \]

[[_2nd_order, _linear, _nonhomogeneous]]

2.428

900

\[ {}y^{\prime \prime }+4 y = \sin \left (x \right )^{2} \]

[[_2nd_order, _linear, _nonhomogeneous]]

4.351