2.2.45 Problems 4401 to 4500

Table 2.91: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

4401

\[ {}2 y^{\prime } x +4 y+a +\sqrt {a^{2}-4 b -4 c y} = 0 \]

[_separable]

33.053

4402

\[ {}\left (1-2 x \right ) y^{\prime } = 16+32 x -6 y \]

[_linear]

8.296

4403

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

[_separable]

7.870

4404

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

[_linear]

3.408

4405

\[ {}2 \left (x +1\right ) y^{\prime }+2 y+\left (x +1\right )^{4} y^{3} = 0 \]

[[_1st_order, _with_linear_symmetries], _rational, _Bernoulli]

12.855

4406

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

[_rational, _Riccati]

4.161

4407

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

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

16.071

4408

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

[_Bernoulli]

17.623

4409

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

[_separable]

4.088

4410

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

[_linear]

2.470

4411

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

[_linear]

2.224

4412

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

[_linear]

3.585

4413

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

[_linear]

5.301

4414

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

[_separable]

4.939

4415

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

[_linear]

3.246

4416

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

[_linear]

3.441

4417

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

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

6.075

4418

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

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

13.392

4419

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

[_separable]

5.648

4420

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

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

44.988

4421

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

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

69.681

4422

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

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

196.333

4423

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

[_rational, _Riccati]

9.651

4424

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

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

6.901

4425

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

[_rational, _Riccati]

4.717

4426

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

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

11.467

4427

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

[_rational, _Riccati]

9.184

4428

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

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

12.573

4429

\[ {}x^{2} y^{\prime } = a +b x y+c \,x^{4} y^{2} \]

[_rational, _Riccati]

8.566

4430

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

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

7.049

4431

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

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

18.630

4432

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

[_rational, _Abel]

0.520

4433

\[ {}x^{2} y^{\prime }+a y^{2}+b \,x^{2} y^{3} = 0 \]

[_rational, _Abel]

0.596

4434

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

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

20.080

4435

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

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

23.981

4436

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

[‘y=_G(x,y’)‘]

3.193

4437

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

[_linear]

2.861

4438

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

[_linear]

2.460

4439

\[ {}\left (-x^{2}+1\right ) y^{\prime } = 5-y x \]

[_linear]

8.915

4440

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

[_linear]

3.218

4441

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

[_linear]

10.748

4442

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

[_linear]

2.872

4443

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

[_separable]

3.800

4444

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

[_linear]

2.319

4445

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

[_linear]

2.286

4446

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

[_linear]

14.488

4447

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

[_linear]

14.669

4448

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

[_separable]

4.704

4449

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

[_linear]

2.343

4450

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

[_linear]

4.123

4451

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

[_linear]

9.106

4452

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

[_linear]

3.250

4453

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

[_linear]

3.085

4454

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

[_separable]

7.573

4455

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

[_separable]

4.849

4456

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

[_separable]

5.375

4457

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

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

4.598

4458

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

[_rational, _Riccati]

4.707

4459

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

[_separable]

11.681

4460

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

[_separable]

12.197

4461

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

[_rational, _Abel]

0.829

4462

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

[‘y=_G(x,y’)‘]

5.500

4463

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

[_linear]

3.727

4464

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

[_rational, _Bernoulli]

4.381

4465

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

[_linear]

6.819

4466

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

[_separable]

15.446

4467

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

[_rational, _Bernoulli]

11.569

4468

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

[_rational, _Riccati]

146.151

4469

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

[_separable]

17.037

4470

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

[_linear]

4.828

4471

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

[_linear]

2.997

4472

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

[_linear]

3.214

4473

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

[_separable]

5.332

4474

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

[_linear]

1.780

4475

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

[_linear]

1.313

4476

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

[_linear]

1.171

4477

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

[_linear]

1.062

4478

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

[_linear]

1.332

4479

\[ {}x \left (x +a \right ) y^{\prime } = \left (b +c y\right ) y \]

[_separable]

3.116

4480

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

[_separable]

1.100

4481

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

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

44.287

4482

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

[_separable]

2.333

4483

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

[_linear]

1.825

4484

\[ {}\left (x -a \right ) \left (x -b \right ) y^{\prime } = c y^{2} \]

[_separable]

2.165

4485

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

[_separable]

36.980

4486

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

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

3.437

4487

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

[_separable]

1.054

4488

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

[_linear]

2.303

4489

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

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

1.501

4490

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

[[_homogeneous, ‘class D‘], _Riccati]

52.069

4491

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

[_linear]

3.719

4492

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

[_linear]

1.211

4493

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

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

2.484

4494

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

[_linear]

1.532

4495

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

[_rational, _Riccati]

2.428

4496

\[ {}2 \left (x^{2}+x +1\right ) y^{\prime } = 1+8 x^{2}-\left (2 x +1\right ) y \]

[_linear]

4.170

4497

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

[_linear]

1.513

4498

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

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

18.293

4499

\[ {}\left (b \,x^{2}+a \right ) y^{\prime } = A +B y^{2} \]

[_separable]

3.212

4500

\[ {}\left (b \,x^{2}+a \right ) y^{\prime } = c x y \ln \left (y\right ) \]

[_separable]

2.534