2.2.121 Problems 12001 to 12100

Table 2.243: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

12001

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

[_quadrature]

0.413

12002

\[ {}y^{\prime } = f \left (y\right ) \]

[_quadrature]

0.589

12003

\[ {}y^{\prime } = f \left (x \right ) g \left (y\right ) \]

[_separable]

0.957

12004

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

[_linear]

2.022

12005

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

[_Bernoulli]

2.375

12006

\[ {}y^{\prime } = f \left (\frac {y}{x}\right ) \]

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

1.222

12007

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

[_Riccati]

1.256

12008

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

[_Riccati]

1.755

12009

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

[_Riccati]

9.671

12010

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

[[_Riccati, _special]]

1.557

12011

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

[_Riccati]

605.206

12012

\[ {}y^{\prime } = a y^{2}+b \,x^{2 n}+c \,x^{n -1} \]

[_Riccati]

3.178

12013

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

[[_homogeneous, ‘class G‘], _Riccati]

2.460

12014

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

[_Riccati]

1.957

12015

\[ {}y^{\prime } = y^{2}+k \left (a x +b \right )^{n} \left (c x +d \right )^{-n -4} \]

[_Riccati]

7.435

12016

\[ {}y^{\prime } = a \,x^{n} y^{2}+b m \,x^{m -1}-a \,b^{2} x^{n +2 m} \]

[_Riccati]

419.558

12017

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

[_Riccati]

51.216

12018

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

[_rational, _Riccati]

3.377

12019

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

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

1.824

12020

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

[_rational, _Riccati]

2.404

12021

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

[_rational, _Riccati]

2.180

12022

\[ {}x^{2} y^{\prime } = x^{2} y^{2}+a \,x^{2 m} \left (b \,x^{m}+c \right )^{n}-\frac {n^{2}}{4}+\frac {1}{4} \]

[_Riccati]

3.985

12023

\[ {}\left (c_{2} x^{2}+b_{2} x +a_{2} \right ) \left (y^{\prime }+\lambda y^{2}\right )+a_{0} = 0 \]

[_rational, _Riccati]

8.285

12024

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

[_rational, [_Riccati, _special]]

2.924

12025

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

[_rational, _Riccati]

4.432

12026

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

[_rational, _Riccati]

3.630

12027

\[ {}x^{n +1} y^{\prime } = a \,x^{2 n} y^{2}+c \,x^{m}+d \]

[_Riccati]

2.947

12028

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

[_rational, _Riccati]

3.724

12029

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

[_rational, _Riccati]

5.722

12030

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

[_Riccati]

1.556

12031

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

[_Riccati]

2.720

12032

\[ {}y^{\prime } = y^{2}+a \,x^{n} y+b \,x^{n -1} \]

[_Riccati]

3.468

12033

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

[_Riccati]

37.232

12034

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

[_Riccati]

3.591

12035

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

[_Riccati]

4.134

12036

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

[_Riccati]

4.861

12037

\[ {}y^{\prime } = a \,x^{n} y^{2}-a \,x^{n} \left (b \,x^{m}+c \right ) y+b m \,x^{m -1} \]

[_Riccati]

6.709

12038

\[ {}y^{\prime } = -a n \,x^{n -1} y^{2}+c \,x^{m} \left (a \,x^{n}+b \right ) y-c \,x^{m} \]

[_Riccati]

6.530

12039

\[ {}y^{\prime } = a \,x^{n} y^{2}+b \,x^{m} y+c k \,x^{k -1}-b c \,x^{m +k}-a \,c^{2} x^{n +2 k} \]

[_Riccati]

7.672

12040

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

[_rational, _Riccati]

2.749

12041

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

[_rational, _Riccati]

2.194

12042

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

[_rational, _Riccati]

3.087

12043

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

[_rational, _Riccati]

2.071

12044

\[ {}y^{\prime } x +a_{3} x y^{2}+a_{2} y+a_{1} x +a_{0} = 0 \]

[_rational, _Riccati]

5.671

12045

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

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

2.651

12046

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

[_rational, _Riccati]

2.249

12047

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

[_rational, _Riccati]

2.253

12048

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

[_rational, _Riccati]

2.670

12049

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

[_rational, _Riccati]

3.631

12050

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

[_rational, _Riccati]

51.775

12051

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

[_rational, _Riccati]

19.092

12052

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

[[_1st_order, _with_linear_symmetries], _rational, _Riccati]

3.351

12053

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

[_rational, _Riccati]

1.589

12054

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

[_rational, _Riccati]

1.860

12055

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

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

2.427

12056

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

[_rational, _Riccati]

6.372

12057

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

[_rational, _Riccati]

2.515

12058

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

[_rational, _Riccati]

3.553

12059

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

[_rational, _Riccati]

7.751

12060

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

[_rational, _Riccati]

530.356

12061

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

[_rational, _Riccati]

6.318

12062

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

[_rational, _Riccati]

366.736

12063

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

[_rational, _Riccati]

431.310

12064

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

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

2.534

12065

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

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

4.789

12066

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

[_rational, _Riccati]

460.123

12067

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

[_rational, _Riccati]

50.296

12068

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

[_rational, _Riccati]

45.411

12069

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

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

2.959

12070

\[ {}\left (c_{2} x^{2}+b_{2} x +a_{2} \right ) \left (y^{\prime }+\lambda y^{2}\right )+\left (b_{1} x +a_{1} \right ) y+a_{0} = 0 \]

[_rational, _Riccati]

18.750

12071

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

[_rational, _Riccati]

10.247

12072

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

[_rational, _Riccati]

4.680

12073

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

[_rational, _Riccati]

4.776

12074

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

[_rational, _Riccati]

5.490

12075

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

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

2.599

12076

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

[_rational, _Riccati]

6.966

12077

\[ {}a \left (x^{2}-1\right ) \left (y^{\prime }+\lambda y^{2}\right )+b x \left (x^{2}-1\right ) y+c \,x^{2}+d x +s = 0 \]

[_rational, _Riccati]

5.078

12078

\[ {}x^{n +1} y^{\prime } = a \,x^{2 n} y^{2}+b \,x^{n} y+c \,x^{m}+d \]

[_Riccati]

3.657

12079

\[ {}x \left (a \,x^{k}+b \right ) y^{\prime } = \alpha \,x^{n} y^{2}+\left (\beta -a n \,x^{k}\right ) y+\gamma \,x^{-n} \]

[_rational, _Riccati]

39.628

12080

\[ {}x^{2} \left (a \,x^{n}-1\right ) \left (y^{\prime }+\lambda y^{2}\right )+\left (p \,x^{n}+q \right ) x y+r \,x^{n}+s = 0 \]

[_rational, _Riccati]

20.571

12081

\[ {}\left (a \,x^{n}+b \,x^{m}+c \right ) y^{\prime } = c y^{2}-b \,x^{m -1} y+a \,x^{n -2} \]

[_rational, _Riccati]

97.294

12082

\[ {}\left (a \,x^{n}+b \,x^{m}+c \right ) y^{\prime } = a \,x^{n -2} y^{2}+b \,x^{m -1} y+c \]

[_rational, _Riccati]

85.003

12083

\[ {}\left (a \,x^{n}+b \,x^{m}+c \right ) y^{\prime } = \alpha \,x^{k} y^{2}+\beta \,x^{s} y-\alpha \,\lambda ^{2} x^{k}+\beta \lambda \,x^{s} \]

[_rational, _Riccati]

130.342

12084

\[ {}\left (a \,x^{n}+b \,x^{m}+c \right ) \left (-y+y^{\prime } x \right )+s \,x^{k} \left (y^{2}-\lambda \,x^{2}\right ) = 0 \]

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

46.423

12085

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

[_Riccati]

1.405

12086

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

[_Riccati]

1.981

12087

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

[_Riccati]

3.180

12088

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

[_Riccati]

1.931

12089

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

[_Riccati]

2.586

12090

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

[_Riccati]

2.156

12091

\[ {}y^{\prime } = y^{2}+a \,{\mathrm e}^{2 \lambda x} \left ({\mathrm e}^{\lambda x}+b \right )^{n}-\frac {\lambda ^{2}}{4} \]

[_Riccati]

5.592

12092

\[ {}y^{\prime } = y^{2}+a \,{\mathrm e}^{8 \lambda x}+b \,{\mathrm e}^{6 \lambda x}+c \,{\mathrm e}^{4 \lambda x}-\lambda ^{2} \]

[_Riccati]

7.508

12093

\[ {}y^{\prime } = a \,{\mathrm e}^{k x} y^{2}+b \,{\mathrm e}^{s x} \]

[_Riccati]

2.588

12094

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

[_Riccati]

4.007

12095

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

[[_1st_order, _with_linear_symmetries], _Riccati]

2.376

12096

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

[_Riccati]

2.161

12097

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

[_Riccati]

3.265

12098

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

[_Riccati]

3.209

12099

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

[_Riccati]

416.536

12100

\[ {}y^{\prime } = a \,{\mathrm e}^{k x} y^{2}+b y+c \,{\mathrm e}^{s x}+d \,{\mathrm e}^{-k x} \]

[_Riccati]

3.484