2.2.70 Problems 6901 to 7000

Table 2.153: 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]

4.885

6902

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

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

11.283

6903

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

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

4.725

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]

5.356

6905

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

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

6.224

6906

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

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

7.744

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]

6.809

6908

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

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

4.433

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‘]]

6.517

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‘]]

5.079

6911

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

[_quadrature]

0.105

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‘]]

5.178

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‘]]

13.160

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‘]]

4.548

6915

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

[_separable]

2.350

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‘]]

5.093

6917

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

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

10.382

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‘]]

4.677

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‘]]

6.514

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‘]]

19.592

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‘]]

4.868

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‘]]

13.803

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]

0.200

6924

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

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

0.305

6925

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

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

0.118

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]

0.191

6927

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

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

0.152

6928

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

[_exact]

2.280

6929

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

[_exact]

2.071

6930

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

[_exact]

0.167

6931

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

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

0.214

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]

0.233

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]

0.483

6934

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

[_separable]

0.675

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]

0.283

6936

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

[_separable]

0.152

6937

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

[_separable]

0.195

6938

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

[‘y=_G(x,y’)‘]

0.194

6939

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

[_separable]

0.137

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‘]]

0.523

6941

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

[_separable]

0.127

6942

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

[_separable]

0.126

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]

4.055

6944

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

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

0.140

6945

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

[_exact]

0.145

6946

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

[_rational, _Bernoulli]

0.299

6947

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

[_exact]

0.171

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]

0.158

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]

2.408

6950

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

[_rational]

0.239

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]

0.197

6952

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

[_exact]

0.398

6953

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

[‘y=_G(x,y’)‘]

0.205

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‘]]

0.312

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‘]]

0.433

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‘]]

0.282

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‘]]

0.283

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‘]]

0.387

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‘]]

0.437

6960

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

[_rational]

1.404

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]‘]]

0.159

6962

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

[_exact, _rational]

0.174

6963

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

[_linear]

1.879

6964

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

[_quadrature]

0.539

6965

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

[_Bernoulli]

3.721

6966

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

[_linear]

1.997

6967

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

[_linear]

1.987

6968

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

[_linear]

1.928

6969

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

[_Bernoulli]

0.513

6970

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

[_rational, _Bernoulli]

0.232

6971

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

[_linear]

1.808

6972

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

[[_linear, ‘class A‘]]

0.944

6973

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

[[_linear, ‘class A‘]]

0.964

6974

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

[[_linear, ‘class A‘]]

1.487

6975

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

[_linear]

1.859

6976

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

[_linear]

2.237

6977

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

[_linear]

1.503

6978

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

[_linear]

2.001

6979

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

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

3.135

6980

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

[_Bernoulli]

3.882

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]

3.602

6982

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

[[_linear, ‘class A‘]]

1.033

6983

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

[_separable]

7.103

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]

5.848

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]‘]]

6.750

6986

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

[_rational, _Riccati]

1.756

6987

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

[_Riccati]

0.743

6988

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

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

3.424

6989

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

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

4.465

6990

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

[_Bernoulli]

2.488

6991

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

[‘y=_G(x,y’)‘]

2.161

6992

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

[[_1st_order, _with_linear_symmetries]]

41.116

6993

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

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

1.078

6994

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

[_separable]

30.441

6995

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

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

2.557

6996

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

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

5.975

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‘]]

4.136

6998

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

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

4.303

6999

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

[[_1st_order, _with_linear_symmetries]]

1.511

7000

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

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

3.779