2.2.49 Problems 4801 to 4900

Table 2.115: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

4801

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

[_rational, _Bernoulli]

6.095

4802

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

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

13.304

4803

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

[_separable]

8.938

4804

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

[_separable]

6.559

4805

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

[_separable]

6.498

4806

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

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

10.501

4807

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

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

28.826

4808

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

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

3.858

4809

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

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

65.310

4810

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

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

32.025

4811

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

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

32.019

4812

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

[‘y=_G(x,y’)‘]

3.164

4813

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

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

4.667

4814

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

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

5.140

4815

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

[_separable]

2.926

4816

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

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

10.958

4817

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

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

2.473

4818

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

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

7.941

4819

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

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

9.122

4820

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

[‘y=_G(x,y’)‘]

283.430

4821

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

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

5.839

4822

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

[_separable]

3.586

4823

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

[[_1st_order, _with_linear_symmetries]]

3.465

4824

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

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

10.023

4825

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

[‘y=_G(x,y’)‘]

3.633

4826

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

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

5.761

4827

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

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

6.559

4828

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

[_separable]

3.780

4829

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

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

8.990

4830

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

[[_homogeneous, ‘class G‘]]

4.469

4831

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

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

27.102

4832

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

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

4.730

4833

\begin{align*} x y^{\prime }&=y f \left (x^{m} y^{n}\right ) \\ \end{align*}

[[_homogeneous, ‘class G‘]]

4.624

4834

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

[_linear]

2.020

4835

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

[_linear]

2.864

4836

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

[_linear]

2.579

4837

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

[_rational, _Bernoulli]

7.434

4838

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

[[_1st_order, _with_linear_symmetries], _rational, _Bernoulli]

6.289

4839

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

[_rational, _Bernoulli]

3.009

4840

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

[[_1st_order, _with_linear_symmetries]]

6.375

4841

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

[_quadrature]

0.257

4842

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

[_linear]

2.194

4843

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

[_linear]

2.230

4844

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

[_linear]

3.327

4845

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

[_separable]

3.227

4846

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

[_separable]

2.941

4847

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

[_linear]

3.494

4848

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

[_separable]

3.842

4849

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

[_rational, _Bernoulli]

5.381

4850

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

[_linear]

20.349

4851

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

[_rational, _Riccati]

37.878

4852

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

[_separable]

3.720

4853

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

[_separable]

11.685

4854

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

[_rational, _Bernoulli]

2.852

4855

\begin{align*} 2 x y^{\prime }+4 y+a +\sqrt {a^{2}-4 b -4 c y}&=0 \\ \end{align*}

[_separable]

7.679

4856

\begin{align*} 2 x y^{\prime }+4 y+a -\sqrt {a^{2}-4 b -4 c y}&=0 \\ \end{align*}

[_separable]

7.212

4857

\begin{align*} \left (1-2 x \right ) y^{\prime }&=16+32 x -6 y \\ \end{align*}

[_linear]

3.500

4858

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

[_separable]

3.965

4859

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

[_linear]

2.400

4860

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

[[_1st_order, _with_linear_symmetries], _rational, _Bernoulli]

5.477

4861

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

[_rational, _Riccati]

3.037

4862

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

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

9.016

4863

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

[_Bernoulli]

5.691

4864

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

[_separable]

2.384

4865

\begin{align*} x^{2} y^{\prime }&=a +b x +c \,x^{2}+x y \\ \end{align*}

[_linear]

2.020

4866

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

[_linear]

2.002

4867

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

[_linear]

2.486

4868

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

[_linear]

3.380

4869

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

[_separable]

2.631

4870

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

[_linear]

2.398

4871

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

[_linear]

2.589

4872

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

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

4.347

4873

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

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

6.235

4874

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

[_separable]

3.615

4875

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

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

5.980

4876

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

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

42.329

4877

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

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

19.484

4878

\begin{align*} x^{2} y^{\prime }&=a +b \,x^{n}+x^{2} y^{2} \\ \end{align*}

[_rational, _Riccati]

0.537

4879

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

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

4.885

4880

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

[_rational, _Riccati]

2.805

4881

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

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

4.382

4882

\begin{align*} x^{2} y^{\prime }&=a +b \,x^{n}+c \,x^{2} y^{2} \\ \end{align*}

[_rational, _Riccati]

88.869

4883

\begin{align*} x^{2} y^{\prime }&=a +b x y+c \,x^{2} y^{2} \\ \end{align*}

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

4.730

4884

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

[_rational, _Riccati]

1.736

4885

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

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

3.908

4886

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

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

10.115

4887

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

[_rational, _Abel]

2.392

4888

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

[_rational, _Abel]

3.280

4889

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

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

11.275

4890

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

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

11.361

4891

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

[‘y=_G(x,y’)‘]

15.930

4892

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

[_linear]

1.894

4893

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

[_linear]

1.766

4894

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

[_linear]

1.751

4895

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

[_linear]

5.200

4896

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

[_linear]

1.652

4897

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

[_linear]

1.589

4898

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

[_linear]

5.047

4899

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

[_linear]

4.934

4900

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

[_linear]

1.737