2.2.70 Problems 6901 to 7000

Table 2.157: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

6901

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

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

49.798

6902

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

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

123.645

6903

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

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

40.250

6904

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

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

39.883

6905

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

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

74.717

6906

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

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

59.353

6907

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

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

23.149

6908

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

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

30.686

6909

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

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

59.892

6910

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

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

35.400

6911

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

[_quadrature]

0.352

6912

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

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

36.086

6913

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

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

68.105

6914

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

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

32.970

6915

\begin{align*} 7 y-3+\left (2 x +1\right ) y^{\prime }&=0 \\ \end{align*}

[_separable]

14.941

6916

\begin{align*} x +2 y+\left (3 x +6 y+3\right ) y^{\prime }&=0 \\ \end{align*}

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

35.659

6917

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

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

68.704

6918

\begin{align*} 3 x -2 y+4-\left (2 x +7 y-1\right ) y^{\prime }&=0 \\ \end{align*}

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

75.375

6919

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

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

38.230

6920

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

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

107.801

6921

\begin{align*} y+7+\left (2 x +y+3\right ) y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ \end{align*}

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

30.803

6922

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

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

68.154

6923

\begin{align*} 3 x^{2} y+8 x y^{2}+\left (x^{3}+8 x^{2} y+12 y^{2}\right ) y^{\prime }&=0 \\ \end{align*}

[_exact, _rational]

0.856

6924

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

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

2.441

6925

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

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

0.331

6926

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

[_exact]

0.823

6927

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

[_exact, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

0.895

6928

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

[_exact]

7.066

6929

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

[_exact]

8.446

6930

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

[_exact]

0.707

6931

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

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

0.941

6932

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

[_exact]

0.626

6933

\begin{align*} {\mathrm e}^{x} \left (y^{3}+x y^{3}+1\right )+3 y^{2} \left (x \,{\mathrm e}^{x}-6\right ) y^{\prime }&=0 \\ y \left (0\right ) &= 1 \\ \end{align*}

[_exact, _Bernoulli]

2.772

6934

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

[_separable]

4.428

6935

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

[_exact]

0.912

6936

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

[_separable]

0.426

6937

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

[_separable]

0.687

6938

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

[‘y=_G(x,y’)‘]

0.681

6939

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

[_separable]

0.369

6940

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

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

3.990

6941

\begin{align*} 3 y-x y^{\prime }&=0 \\ \end{align*}

[_separable]

0.379

6942

\begin{align*} y-3 x y^{\prime }&=0 \\ \end{align*}

[_separable]

0.405

6943

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

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

38.673

6944

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

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

0.411

6945

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

[_exact]

0.740

6946

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

[_rational, _Bernoulli]

2.448

6947

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

[_exact]

0.925

6948

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

[_exact]

0.737

6949

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

[[_1st_order, _with_linear_symmetries], _rational]

13.109

6950

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

[_rational]

0.840

6951

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

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

0.572

6952

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

[_exact]

2.316

6953

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

[‘y=_G(x,y’)‘]

1.143

6954

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

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

2.559

6955

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

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

3.369

6956

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

[_rational, [_Abel, ‘2nd type‘, ‘class B‘]]

1.313

6957

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

[_rational, [_Abel, ‘2nd type‘, ‘class B‘]]

1.393

6958

\begin{align*} y^{2}+12 x^{2} y+\left (2 y x +4 x^{3}\right ) y^{\prime }&=0 \\ \end{align*}

[[_homogeneous, ‘class G‘], _exact, _rational, [_Abel, ‘2nd type‘, ‘class B‘]]

3.220

6959

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

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

3.233

6960

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

[_rational]

7.566

6961

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

[_exact, _rational, [_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

0.708

6962

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

[_exact, _rational]

0.714

6963

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

[_linear]

13.448

6964

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

[_quadrature]

3.954

6965

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

[_Bernoulli]

33.763

6966

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

[_linear]

6.754

6967

\begin{align*} r^{\prime }&=\left (r+{\mathrm e}^{-\theta }\right ) \tan \left (\theta \right ) \\ \end{align*}

[_linear]

5.796

6968

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

[_linear]

6.516

6969

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

[_Bernoulli]

5.138

6970

\begin{align*} \left (-x^{3}+1\right ) y^{\prime }-2 \left (x +1\right ) y&=y^{{5}/{2}} \\ \end{align*}

[_rational, _Bernoulli]

0.888

6971

\begin{align*} \tan \left (\theta \right ) r^{\prime }-r&=\tan \left (\theta \right )^{2} \\ \end{align*}

[_linear]

6.174

6972

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

[[_linear, ‘class A‘]]

4.422

6973

\begin{align*} 2 y+y^{\prime }&=\frac {3 \,{\mathrm e}^{-2 x}}{4} \\ \end{align*}

[[_linear, ‘class A‘]]

5.063

6974

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

[[_linear, ‘class A‘]]

4.774

6975

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

[_linear]

5.326

6976

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

[_linear]

6.638

6977

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

[_linear]

4.415

6978

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

[_linear]

7.387

6979

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

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

34.484

6980

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

[_Bernoulli]

34.345

6981

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

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

21.606

6982

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

[[_linear, ‘class A‘]]

4.576

6983

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

[_separable]

112.611

6984

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

[_Bernoulli]

19.734

6985

\begin{align*} \left (x -\cos \left (y\right )\right ) y^{\prime }+\tan \left (y\right )&=0 \\ y \left (1\right ) &= \frac {\pi }{6} \\ \end{align*}

[[_1st_order, ‘_with_symmetry_[F(x)*G(y),0]‘]]

37.994

6986

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

[_rational, _Riccati]

7.971

6987

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

[_Riccati]

1.844

6988

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

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

32.737

6989

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

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

46.384

6990

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

[_Bernoulli]

12.315

6991

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

[‘y=_G(x,y’)‘]

7.075

6992

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

[[_1st_order, _with_linear_symmetries]]

34.682

6993

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

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

7.392

6994

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

[_separable]

27.723

6995

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

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

21.859

6996

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

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

60.513

6997

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

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

63.796

6998

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

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

62.535

6999

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

[[_1st_order, _with_linear_symmetries]]

11.151

7000

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

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

46.592