2.20.40 THEORY OF DIFFERENTIAL EQUATIONS IN ENGINEERING AND MECHANICS. K.T. CHAU, CRC Press. Boca Raton, FL. 2018

Column notations: A is ODE degree. B is Program Number of solutions generated. C is CAS Number of solutions generated.

Table 2.458: THEORY OF DIFFERENTIAL EQUATIONS IN ENGINEERING AND MECHANICS. K.T. CHAU, CRC Press. Boca Raton, FL. 2018

#

ODE

A

B

C

Program classification

CAS classification

Solved?

Verified?

time (sec)

5834

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

1

1

1

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

0.74

5835

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

1

1

3

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

164.3

5836

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

i.c.

1

1

1

exact, separable, differentialType, first_order_ode_lie_symmetry_lookup

[_separable]

3.204

5837

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

1

1

1

first_order_ode_lie_symmetry_calculated

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

1.694

5838

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

1

1

1

homogeneousTypeMapleC, first_order_ode_lie_symmetry_calculated

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

1.736

5839

\[ {}{\mathrm e}^{x}+y+\left (x -2 \sin \left (y\right )\right ) y^{\prime } = 0 \]

1

1

1

exact

[_exact]

1.74

5840

\[ {}3 x +\frac {6}{y}+\left (\frac {x^{2}}{y}+\frac {3 y}{x}\right ) y^{\prime } = 0 \]

1

1

3

exact, differentialType

[_rational]

12.398

5841

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

1

1

1

riccati, bernoulli, exactByInspection, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

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

0.875

5842

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

1

1

1

exactByInspection, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

1.274

5843

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

1

1

2

bernoulli, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

1.115

5844

\[ {}y^{\prime } = -\frac {2}{t}+\frac {y}{t}+\frac {y^{2}}{t} \]

1

1

1

exact, riccati, separable, first_order_ode_lie_symmetry_lookup

[_separable]

2.951

5845

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

1

1

1

riccati

[_rational, _Riccati]

1.099

5846

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

2

4

2

dAlembert

[_dAlembert]

0.789

5847

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

2

1

2

quadrature

[_quadrature]

1.069

5848

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

2

1

2

quadrature

[_quadrature]

0.316

5849

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.223

5850

\[ {}s^{\prime \prime }+2 s^{\prime }+s = 0 \]

i.c.

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _missing_x]]

0.617

5851

\[ {}y^{\prime \prime }-2 y^{\prime }+5 y = 0 \]

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _missing_x]]

0.486

5852

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.378

5853

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.393

5854

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.622

5855

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

1

1

1

kovacic, second_order_change_of_variable_on_y_method_1

[[_2nd_order, _with_linear_symmetries]]

0.727

5856

\[ {}p \,x^{2} u^{\prime \prime }+q x u^{\prime }+r u = f \left (x \right ) \]

1

1

1

kovacic, second_order_euler_ode, second_order_change_of_variable_on_x_method_2, second_order_change_of_variable_on_y_method_2

[[_2nd_order, _linear, _nonhomogeneous]]

7.53

5857

\[ {}\sin \left (x \right ) u^{\prime \prime }+2 \cos \left (x \right ) u^{\prime }+\sin \left (x \right ) u = 0 \]

1

1

1

kovacic, second_order_change_of_variable_on_y_method_1

[_Lienard]

1.17

5858

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

1

0

2

unknown

[[_3rd_order, _missing_x], [_3rd_order, _missing_y], [_3rd_order, _with_exponential_symmetries], [_3rd_order, _with_linear_symmetries], [_3rd_order, _reducible, _mu_y2], [_3rd_order, _reducible, _mu_poly_yn]]

N/A

0.0

5859

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

1

1

1

kovacic, exact linear second order ode, second_order_integrable_as_is, second_order_change_of_variable_on_x_method_1, second_order_change_of_variable_on_x_method_2, second_order_change_of_variable_on_y_method_2, second_order_ode_non_constant_coeff_transformation_on_B

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

2.795

5860

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

1

0

2

unknown

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

N/A

0.096

5861

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

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _with_linear_symmetries]]

0.21

5862

\[ {}y^{\prime \prime \prime \prime }+2 y^{\prime \prime }+y = 3 \sin \left (t \right )-5 \cos \left (t \right ) \]

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_high_order, _linear, _nonhomogeneous]]

1.573

5863

\[ {}y^{\prime \prime \prime }-y^{\prime \prime }-y^{\prime }+y = g \left (t \right ) \]

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _linear, _nonhomogeneous]]

0.318

5864

\[ {}y^{\left (5\right )}-\frac {y^{\prime \prime \prime \prime }}{t} = 0 \]

1

1

1

higher_order_missing_y

[[_high_order, _missing_y]]

1.342

5865

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

1

1

2

second_order_ode_missing_x

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

0.963

5866

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

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_high_order, _linear, _nonhomogeneous]]

0.446

5867

\[ {}u^{\prime \prime }-\left (2 x +1\right ) u^{\prime }+\left (x^{2}+x -1\right ) u = 0 \]

1

1

1

kovacic, second_order_change_of_variable_on_y_method_1

[[_2nd_order, _with_linear_symmetries]]

0.763

5868

\[ {}y^{\prime \prime }+6 y^{\prime }+9 y = 50 \,{\mathrm e}^{2 x} \]

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.488

5869

\[ {}y^{\prime \prime }-4 y^{\prime }+4 y = 50 \,{\mathrm e}^{2 x} \]

1

1

1

kovacic, second_order_linear_constant_coeff, linear_second_order_ode_solved_by_an_integrating_factor

[[_2nd_order, _with_linear_symmetries]]

0.447

5870

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.507

5871

\[ {}y^{\prime \prime \prime }+6 y^{\prime \prime }+11 y^{\prime }+6 y = 2 \sin \left (3 x \right ) \]

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_3rd_order, _linear, _nonhomogeneous]]

0.69

5872

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _with_linear_symmetries]]

0.6

5873

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

1

1

1

kovacic, second_order_linear_constant_coeff

[[_2nd_order, _linear, _nonhomogeneous]]

0.389

5874

\[ {}y^{\prime \prime }+2 y^{\prime }+\left (1+\frac {2}{\left (1+3 x \right )^{2}}\right ) y = 0 \]

1

1

1

kovacic

[[_2nd_order, _with_linear_symmetries]]

0.995

5875

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

1

1

1

first_order_ode_lie_symmetry_calculated

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

3.021

5876

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

2

2

4

quadrature

[_quadrature]

0.984

5877

\[ {}x^{2} y^{\prime \prime }-2 x y^{\prime }+\left (x^{2}+2\right ) y = 0 \]

1

1

1

kovacic, second_order_bessel_ode, second_order_change_of_variable_on_y_method_1

[[_2nd_order, _with_linear_symmetries]]

0.845

5878

\[ {}y^{\prime \prime }+\frac {2 y^{\prime }}{x}-\frac {2 y}{\left (1+x \right )^{2}} = 0 \]

1

1

1

kovacic, exact linear second order ode, second_order_integrable_as_is

[[_2nd_order, _with_linear_symmetries]]

1.504

5879

\[ {}y \left (1+x^{2} y^{2}\right )+\left (x^{2} y^{2}-1\right ) x y^{\prime } = 0 \]

1

1

1

exactWithIntegrationFactor, first_order_ode_lie_symmetry_calculated

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

1.478

5880

\[ {}2 x^{3} y^{2}-y+\left (2 x^{2} y^{3}-x \right ) y^{\prime } = 0 \]

1

1

3

exactWithIntegrationFactor

[_rational]

1.302

5881

\[ {}\frac {1}{y}+\sec \left (\frac {y}{x}\right )-\frac {x y^{\prime }}{y^{2}} = 0 \]

1

1

1

homogeneousTypeD2

[[_homogeneous, ‘class D‘]]

23.208

5882

\[ {}\phi ^{\prime }-\frac {\phi ^{2}}{2}-\phi \cot \left (\theta \right ) = 0 \]

1

1

1

riccati, bernoulli, first_order_ode_lie_symmetry_lookup

[_Bernoulli]

1.227

5883

\[ {}u^{\prime \prime }-\cot \left (\theta \right ) u^{\prime } = 0 \]

1

1

1

second_order_ode_missing_y

[[_2nd_order, _missing_y]]

0.991

5884

\[ {}\left (\phi ^{\prime }-\frac {\phi ^{2}}{2}\right ) \sin \left (\theta \right )^{2}-\phi \sin \left (\theta \right ) \cos \left (\theta \right ) = \frac {\cos \left (2 \theta \right )}{2}+1 \]

1

1

1

riccati

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

3.698

5885

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

1

0

4

unknown

[[_3rd_order, _missing_x], [_3rd_order, _missing_y], [_3rd_order, _with_linear_symmetries], [_3rd_order, _reducible, _mu_y2]]

N/A

0.0

5886

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

1

1

1

higher_order_linear_constant_coefficients_ODE

[[_high_order, _missing_x]]

0.113

5887

\[ {}y \,{\mathrm e}^{x y}+x \,{\mathrm e}^{x y} y^{\prime } = 0 \]

1

1

1

exact, linear, separable, differentialType, homogeneousTypeD2, first_order_ode_lie_symmetry_lookup

[_separable]

1.178

5888

\[ {}x -2 x y+{\mathrm e}^{y}+\left (y-x^{2}+x \,{\mathrm e}^{y}\right ) y^{\prime } = 0 \]

1

1

1

exact

[_exact]

1.484

5889

\[ {}y^{\prime \prime }-\frac {y^{\prime }}{\sqrt {x}}+\frac {\left (x +\sqrt {x}-8\right ) y}{4 x^{2}} = 0 \]

1

1

1

kovacic

[[_2nd_order, _with_linear_symmetries]]

0.61

5890

\[ {}\left (-x^{2}+1\right ) z^{\prime \prime }+\left (1-3 x \right ) z^{\prime }+k z = 0 \]

1

0

1

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

1.339

5891

\[ {}\left (-x^{2}+1\right ) \eta ^{\prime \prime }-\left (1+x \right ) \eta ^{\prime }+\left (k +1\right ) \eta = 0 \]

1

0

1

unknown

[[_2nd_order, _with_linear_symmetries]]

N/A

1.397

5892

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

1

1

2

bernoulli, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

1.446

5893

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

1

1

2

bernoulli, homogeneousTypeD2, exactWithIntegrationFactor, first_order_ode_lie_symmetry_lookup

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

0.927

5894

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

1

1

1

riccati, exactByInspection, homogeneousTypeD2

[[_homogeneous, ‘class D‘], _rational, _Riccati]

1.256

5895

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

1

0

1

unknown

[‘y=_G(x,y’)‘]

N/A

1.316

5896

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

1

1

1

exactByInspection, homogeneousTypeD2, first_order_ode_lie_symmetry_calculated

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

1.022

5897

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

1

1

2

second_order_ode_missing_x

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

1.32

5898

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=3 x_{1}-18 x_{2} \\ x_{2}^{\prime }=2 x_{1}-9 x_{2} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.357

5899

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=x_{1}+3 x_{2} \\ x_{2}^{\prime }=5 x_{1}+3 x_{2} \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.331

5900

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=-x_{1}+3 x_{2} \\ x_{2}^{\prime }=-3 x_{1}+5 x_{2} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.296

5901

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=4 x_{1}-x_{2} \\ x_{2}^{\prime }=5 x_{1}+2 x_{2} \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.526

5902

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=-2 x_{1}+x_{2} \\ x_{2}^{\prime }=x_{1}-2 x_{2} \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.316

5903

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=-2 x_{1}+x_{2}+2 \,{\mathrm e}^{-t} \\ x_{2}^{\prime }=x_{1}-2 x_{2}+3 t \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.73

5904

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=3 x_{1}-x_{2} \\ x_{2}^{\prime }=16 x_{1}-5 x_{2} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.303

5905

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=x_{1}-2 x_{2} \\ x_{2}^{\prime }=3 x_{1}-4 x_{2} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.309

5906

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=3 x_{1}-18 x_{2} \\ x_{2}^{\prime }=2 x_{1}-9 x_{2} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.372

5907

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=-x_{1}+3 x_{2} \\ x_{2}^{\prime }=-3 x_{1}+5 x_{2} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.237

5908

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=3 x_{1}-18 x_{2} \\ x_{2}^{\prime }=2 x_{1}-9 x_{2} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.256

5909

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=3 x_{1}-x_{2} \\ x_{2}^{\prime }=4 x_{1}-2 x_{2} \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.274

5910

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=x_{1}+x_{2}-8 \\ x_{2}^{\prime }=x_{1}+x_{2}+3 \end {array}\right ] \]

1

1

2

system of linear ODEs

system of linear ODEs

0.674

5911

\[ {}\left [\begin {array}{c} x_{1}^{\prime }=x_{1}+x_{2}-8 \\ x_{2}^{\prime }=x_{1}+x_{2}+3 \end {array}\right ] \]

i.c.

1

1

2

system of linear ODEs

system of linear ODEs

0.466