2.2.263 Problems 26201 to 26257

Table 2.543: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

Maple

Mma

Sympy

time(sec)

26201

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

[[_linear, ‘class A‘]]

1.625

26202

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

[_separable]

11.818

26203

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

[_separable]

4.476

26204

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

[_separable]

4.176

26205

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

[_separable]

5.361

26206

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

[[_Riccati, _special]]

13.906

26207

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

[_Riccati]

20.814

26208

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

[[_1st_order, _with_linear_symmetries], _rational, _Bernoulli]

7.334

26209

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

[_separable]

4.138

26210

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

[_separable]

13.196

26211

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

[_separable]

2.767

26212

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

[_separable]

4.292

26213

\begin{align*} y y^{\prime } \sqrt {x^{2}+1}+x \sqrt {1+y^{2}}&=0 \\ \end{align*}

[_separable]

4.985

26214

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

[_separable]

21.155

26215

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

[_quadrature]

2.280

26216

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

[_separable]

7.424

26217

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

[_separable]

5.793

26218

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

[_separable]

6.657

26219

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

[_separable]

4.149

26220

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

[_separable]

4.407

26221

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

[_separable]

4.824

26222

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

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

2.463

26223

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

[[_linear, ‘class A‘]]

1.902

26224

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

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

88.289

26225

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

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

9.766

26226

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

[_separable]

6.077

26227

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

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

8.415

26228

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

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

2.242

26229

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

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

0.832

26230

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

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

3.213

26231

\begin{align*} x^{6}-2 x^{5}+2 x^{4}-y^{3}+4 x^{2} y+\left (x y^{2}-4 x^{3}\right ) y^{\prime }&=0 \\ \end{align*}

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

3.645

26232

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

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

1.785

26233

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

[_Bernoulli]

2.040

26234

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

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

2.910

26235

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

[_separable]

1.940

26236

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

[_separable]

7.299

26237

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

[_separable]

5.956

26238

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

[_separable]

2.450

26239

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

[_quadrature]

5.721

26240

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

[_quadrature]

16.808

26241

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

[_linear]

3.839

26242

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

[_quadrature]

0.702

26243

\begin{align*} {\mathrm e}^{y^{\prime }}&=1 \\ \end{align*}

[_quadrature]

0.457

26244

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

[_quadrature]

0.295

26245

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

[_quadrature]

0.339

26246

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

[_quadrature]

0.499

26247

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

[_quadrature]

0.250

26248

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

[_quadrature]

0.334

26249

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

[_separable]

8.378

26250

\begin{align*} x^{2} y^{\prime }+\cos \left (2 y\right )&=1 \\ y \left (\infty \right ) &= \frac {5 \pi }{4} \\ \end{align*}

[_separable]

9.183

26251

\begin{align*} x^{3} y^{\prime }-\cos \left (y\right )&=1 \\ y \left (\infty \right ) &= 5 \pi \\ \end{align*}

[_separable]

9.613

26252

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

[_separable]

7.180

26253

\begin{align*} {\mathrm e}^{y}&={\mathrm e}^{4 y} y^{\prime }+1 \\ y \left (\infty \right ) &= y_{0} \\ \end{align*}

[_quadrature]

4.047

26254

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

[_separable]

6.156

26255

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

[_separable]

7.970

26256

\begin{align*} x^{2} y^{\prime }+\sin \left (2 y\right )&=1 \\ y \left (\infty \right ) &= \frac {11 \pi }{4} \\ \end{align*}

[_separable]

20.300

26257

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

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

24.442