2.16.72 Problems 7101 to 7200

Table 2.160: Main lookup table. Sorted sequentially by problem number.

#

ODE

Program classification

CAS classification

Solved?

Verified?

time (sec)

7101

\[ {}y^{\prime \prime } = k \]

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y, second_order_ode_quadrature, second_order_linear_constant_coeff, second_order_ode_can_be_made_integrable

[[_2nd_order, _quadrature]]

1.232

7102

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

first_order_ode_lie_symmetry_calculated

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

39.384

7103

\[ {}y^{\prime }+\sin \left (x -y\right ) = 0 \]

first_order_ode_lie_symmetry_calculated

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

1.358

7104

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

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_ode_missing_y, second_order_ode_quadrature, second_order_linear_constant_coeff

[[_2nd_order, _quadrature]]

2.115

7105

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

second_order_ode_quadrature

[[_2nd_order, _quadrature]]

0.132

7106

\[ {}y y^{\prime \prime } = 1 \]

second_order_ode_missing_x

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

0.869

7107

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

unknown

[[_Emden, _Fowler], [_2nd_order, _with_linear_symmetries]]

N/A

0.053

7108

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

unknown

[[_Emden, _Fowler], [_2nd_order, _with_linear_symmetries]]

N/A

0.06

7109

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

second_order_ode_quadrature

[[_2nd_order, _quadrature]]

0.135

7110

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

unknown

[NONE]

N/A

0.128

7111

\[ {}3 y y^{\prime \prime }+y = 5 \]

second_order_ode_missing_x

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

1.069

7112

\[ {}a y y^{\prime \prime }+b y = c \]

second_order_ode_missing_x

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

1.901

7113

\[ {}a y^{2} y^{\prime \prime }+b y^{2} = c \]

second_order_ode_missing_x

[[_2nd_order, _missing_x], [_2nd_order, _reducible, _mu_x_y1]]

2.931

7114

\[ {}a y y^{\prime \prime }+b y = 0 \]

second_order_ode_quadrature

[[_2nd_order, _quadrature]]

0.237

7115

\[ {}\left [\begin {array}{c} x^{\prime }=9 x+4 y \\ y^{\prime }=-6 x-y \\ z^{\prime }=6 x+4 y+3 z \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.681

7116

\[ {}\left [\begin {array}{c} x^{\prime }=x-3 y \\ y^{\prime }=3 x+7 y \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.481

7117

\[ {}\left [\begin {array}{c} x^{\prime }=x-2 y \\ y^{\prime }=2 x+5 y \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.477

7118

\[ {}\left [\begin {array}{c} x^{\prime }=7 x+y \\ y^{\prime }=-4 x+3 y \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.495

7119

\[ {}\left [\begin {array}{c} x^{\prime }=x+y \\ y^{\prime }=y \\ z^{\prime }=z \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.34

7120

\[ {}\left [\begin {array}{c} x^{\prime }=2 x+y-z \\ y^{\prime }=-x+2 z \\ z^{\prime }=-x-2 y+4 z \end {array}\right ] \]

system of linear ODEs

system of linear ODEs

0.473

7121

\[ {}x^{\prime } = 4 A k \left (\frac {x}{A}\right )^{\frac {3}{4}}-3 k x \]

quadrature

[_quadrature]

1.17

7122

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

dAlembert

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

2.651

7123

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

i.c.

dAlembert

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

2.527

7124

\[ {}y^{\prime } = \frac {y \left (1+\frac {a^{2} x}{\sqrt {a^{2} \left (x^{2}+1\right )}}\right )}{\sqrt {a^{2} \left (x^{2}+1\right )}} \]

exact, linear, separable, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

4.036

7125

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

riccati

[[_Riccati, _special]]

1.315

7126

\[ {}y^{\prime } = 2 \sqrt {y} \]

i.c.

quadrature

[_quadrature]

0.315

7127

\[ {}z^{\prime \prime }+3 z^{\prime }+2 z = 24 \,{\mathrm e}^{-3 t}-24 \,{\mathrm e}^{-4 t} \]

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.63

7128

\[ {}y^{\prime } = \sqrt {1-y^{2}} \]

separable

[_quadrature]

0.821

7129

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

riccati

[_Riccati]

2.411

7130

\[ {}y^{\prime } = 2 y \left (x \sqrt {y}-1\right ) \]

i.c.

bernoulli, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

1.849

7131

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

unknown

[[_2nd_order, _exact, _nonlinear], [_2nd_order, _with_linear_symmetries], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_xy]]

N/A

0.066

7132

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.756

7133

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.684

7134

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.881

7135

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

second_order_integrable_as_is, exact nonlinear second order ode

[[_2nd_order, _exact, _nonlinear], [_2nd_order, _reducible, _mu_x_y1], [_2nd_order, _reducible, _mu_y_y1], [_2nd_order, _reducible, _mu_xy]]

12.938

7136

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

riccati

[_Riccati]

9.154

7137

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

kovacic

[[_2nd_order, _with_linear_symmetries]]

1.337

7138

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

kovacic

[[_2nd_order, _with_linear_symmetries]]

0.918

7139

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

kovacic

[[_2nd_order, _with_linear_symmetries]]

0.99

7140

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

kovacic

[[_2nd_order, _with_linear_symmetries]]

1.596

7141

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

kovacic

[[_2nd_order, _linear, _nonhomogeneous]]

1.592

7142

\[ {}y^{\prime \prime }-x y^{\prime }-x y-x^{4}-6 = 0 \]

kovacic

[[_2nd_order, _linear, _nonhomogeneous]]

1.579

7143

\[ {}y^{\prime \prime }-x y^{\prime }-x y-x^{5}+24 = 0 \]

kovacic

[[_2nd_order, _linear, _nonhomogeneous]]

1.647

7144

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

kovacic

[[_2nd_order, _with_linear_symmetries]]

0.756

7145

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

kovacic

[[_2nd_order, _with_linear_symmetries]]

1.434

7146

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

kovacic

[[_2nd_order, _linear, _nonhomogeneous]]

2.037

7147

\[ {}y^{\prime \prime }-a x y^{\prime }-b x y-c x = 0 \]

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

0.597

7148

\[ {}y^{\prime \prime }-a x y^{\prime }-b x y-c \,x^{2} = 0 \]

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

0.446

7149

\[ {}y^{\prime \prime }-a x y^{\prime }-b x y-c \,x^{3} = 0 \]

unknown

[[_2nd_order, _linear, _nonhomogeneous]]

N/A

0.733

7150

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

second_order_airy

[[_2nd_order, _with_linear_symmetries]]

18.182

7151

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

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

18.117

7152

\[ {}y^{\prime \prime }-y^{\prime }-x y-x^{2}-1 = 0 \]

second_order_airy

[[_2nd_order, _with_linear_symmetries]]

18.792

7153

\[ {}y^{\prime \prime }-y^{\prime }-x y-x^{2}-1 = 0 \]

second_order_airy

[[_2nd_order, _with_linear_symmetries]]

16.68

7154

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

second_order_airy

[[_2nd_order, _with_linear_symmetries]]

15.119

7155

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

second_order_airy

[[_2nd_order, _with_linear_symmetries]]

15.381

7156

\[ {}y^{\prime \prime }-y^{\prime }-x y-x^{3}+1 = 0 \]

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

19.355

7157

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

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

15.474

7158

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

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

19.099

7159

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

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

14.798

7160

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

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

15.169

7161

\[ {}y^{\prime \prime }-6 y^{\prime }-x y-x^{3}+2 = 0 \]

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

16.865

7162

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

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

17.049

7163

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

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

19.127

7164

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

second_order_airy

[[_2nd_order, _linear, _nonhomogeneous]]

16.58

7165

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

second_order_airy, second_order_bessel_ode

[[_2nd_order, _linear, _nonhomogeneous]]

10.975

7166

\[ {}y^{\prime \prime }-x y-x^{6}+64 = 0 \]

second_order_airy, second_order_bessel_ode

[[_2nd_order, _linear, _nonhomogeneous]]

14.98

7167

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

second_order_airy, second_order_bessel_ode

[[_2nd_order, _with_linear_symmetries]]

5.621

7168

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

second_order_airy, second_order_bessel_ode

[[_2nd_order, _with_linear_symmetries]]

7.583

7169

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

second_order_airy, second_order_bessel_ode

[[_2nd_order, _linear, _nonhomogeneous]]

4.599

7170

\[ {}y^{\prime \prime }-x y-x^{6}-x^{3}+42 = 0 \]

second_order_airy, second_order_bessel_ode

[[_2nd_order, _linear, _nonhomogeneous]]

19.338

7171

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

second_order_bessel_ode

[[_2nd_order, _with_linear_symmetries]]

10.475

7172

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

second_order_bessel_ode

[[_2nd_order, _with_linear_symmetries]]

7.586

7173

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

second_order_bessel_ode

[[_2nd_order, _linear, _nonhomogeneous]]

4.766

7174

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

second_order_bessel_ode

[[_2nd_order, _linear, _nonhomogeneous]]

13.415

7175

\[ {}y^{\prime \prime }-2 x^{2} y-x^{4}+1 = 0 \]

second_order_bessel_ode

[[_2nd_order, _linear, _nonhomogeneous]]

36.542

7176

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

second_order_bessel_ode

[[_2nd_order, _with_linear_symmetries]]

16.328

7177

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

second_order_bessel_ode

[[_2nd_order, _with_linear_symmetries]]

76.621

7178

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

0.956

7179

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

1.598

7180

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

kovacic

[[_2nd_order, _with_linear_symmetries]]

1.172

7181

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

1.187

7182

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

0.58

7183

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

0.812

7184

\[ {}y^{\prime \prime }-\frac {y^{\prime }}{x}-x y-x^{2}-\frac {1}{x} = 0 \]

second_order_bessel_ode

[[_2nd_order, _with_linear_symmetries]]

2.713

7185

\[ {}y^{\prime \prime }-\frac {y^{\prime }}{x}-x^{2} y-x^{3}-\frac {1}{x} = 0 \]

kovacic, second_order_bessel_ode, second_order_change_of_variable_on_x_method_1, second_order_change_of_variable_on_x_method_2

[[_2nd_order, _with_linear_symmetries]]

1.931

7186

\[ {}y^{\prime \prime }-\frac {y^{\prime }}{x}-x^{3} y-x^{4}-\frac {1}{x} = 0 \]

second_order_bessel_ode

[[_2nd_order, _with_linear_symmetries]]

2.737

7187

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

1.347

7188

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

0.845

7189

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

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

0.947

7190

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

unknown

[[_3rd_order, _with_linear_symmetries]]

N/A

0.062

7191

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

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.468

7192

\[ {}w^{\prime } = -\frac {1}{2}-\frac {\sqrt {1-12 w}}{2} \]

i.c.

quadrature

[_quadrature]

1.661

7193

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.956

7194

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.727

7195

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.941

7196

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.873

7197

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.921

7198

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.921

7199

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

1.786

7200

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

i.c.

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.717