2.2.27 Problems 2601 to 2700

Table 2.55: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

2601

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = \left (3 t^{7}-5 t^{4}\right ) {\mathrm e}^{3 t} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.480

2602

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

[[_2nd_order, _linear, _nonhomogeneous]]

16.042

2603

\[ {}y^{\prime \prime }-2 y^{\prime }+5 y = 2 \cos \left (t \right )^{2} {\mathrm e}^{t} \]

[[_2nd_order, _linear, _nonhomogeneous]]

14.552

2604

\[ {}y^{\prime \prime }+y^{\prime }-6 y = \sin \left (t \right )+t \,{\mathrm e}^{2 t} \]

[[_2nd_order, _linear, _nonhomogeneous]]

2.374

2605

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

[[_2nd_order, _linear, _nonhomogeneous]]

82.097

2606

\[ {}y^{\prime \prime }-3 y^{\prime }+2 y = {\mathrm e}^{t}+{\mathrm e}^{2 t} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.354

2607

\[ {}y^{\prime \prime }+2 y^{\prime } = 1+t^{2}+{\mathrm e}^{-2 t} \]

[[_2nd_order, _missing_y]]

2.367

2608

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

[[_2nd_order, _linear, _nonhomogeneous]]

4.169

2609

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

[[_2nd_order, _linear, _nonhomogeneous]]

2.803

2610

\[ {}y^{\prime \prime }-6 y^{\prime }+9 y = t^{{3}/{2}} {\mathrm e}^{3 t} \]

[[_2nd_order, _linear, _nonhomogeneous]]

1.557

2611

\[ {}y^{\prime \prime }+y^{\prime } t +y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

0.605

2612

\[ {}y^{\prime \prime }-t y = 0 \]

[[_Emden, _Fowler]]

0.460

2613

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

[[_2nd_order, _exact, _linear, _homogeneous]]

0.632

2614

\[ {}y^{\prime \prime }-t^{3} y = 0 \]

[[_Emden, _Fowler]]

0.503

2615

\[ {}t \left (2-t \right ) y^{\prime \prime }-6 \left (t -1\right ) y^{\prime }-4 y = 0 \]
i.c.

[[_2nd_order, _exact, _linear, _homogeneous]]

0.684

2616

\[ {}y^{\prime \prime }+t^{2} y = 0 \]
i.c.

[[_Emden, _Fowler]]

0.478

2617

\[ {}y^{\prime \prime }-t^{3} y = 0 \]
i.c.

[[_Emden, _Fowler]]

0.458

2618

\[ {}y^{\prime \prime }+\left (t^{2}+2 t +1\right ) y^{\prime }-\left (4+4 t \right ) y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.545

2619

\[ {}y^{\prime \prime }-2 y^{\prime } t +\lambda y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.587

2620

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

[_Gegenbauer]

0.760

2621

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

[_Gegenbauer, [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

0.692

2622

\[ {}y^{\prime \prime }+t^{3} y^{\prime }+3 t^{2} y = {\mathrm e}^{t} \]
i.c.

[[_2nd_order, _exact, _linear, _nonhomogeneous]]

0.677

2623

\[ {}\left (1-t \right ) y^{\prime \prime }+y^{\prime } t +y = 0 \]
i.c.

[[_2nd_order, _exact, _linear, _homogeneous]]

0.538

2624

\[ {}y^{\prime \prime }+y^{\prime }+t y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.531

2625

\[ {}y^{\prime \prime }+y^{\prime } t +{\mathrm e}^{t} y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.711

2626

\[ {}y^{\prime \prime }+y^{\prime }+{\mathrm e}^{t} y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.629

2627

\[ {}y^{\prime \prime }+y^{\prime }+{\mathrm e}^{-t} y = 0 \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.865

2628

\[ {}t^{2} y^{\prime \prime }+5 y^{\prime } t -5 y = 0 \]

[[_Emden, _Fowler]]

1.086

2629

\[ {}2 t^{2} y^{\prime \prime }+3 y^{\prime } t -y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.185

2630

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

[[_2nd_order, _with_linear_symmetries], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

1.122

2631

\[ {}t^{2} y^{\prime \prime }+3 y^{\prime } t +y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.173

2632

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

[[_Emden, _Fowler]]

1.153

2633

\[ {}\left (t -2\right )^{2} y^{\prime \prime }+5 \left (t -2\right ) y^{\prime }+4 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.009

2634

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

[[_Emden, _Fowler], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

1.260

2635

\[ {}t^{2} y^{\prime \prime }+3 y^{\prime } t +2 y = 0 \]

[[_Emden, _Fowler]]

1.837

2636

\[ {}t^{2} y^{\prime \prime }-y^{\prime } t -2 y = 0 \]
i.c.

[[_Emden, _Fowler]]

2.348

2637

\[ {}t^{2} y^{\prime \prime }-3 y^{\prime } t +4 y = 0 \]
i.c.

[[_Emden, _Fowler], [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

1.784

2638

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

[[_2nd_order, _with_linear_symmetries]]

1.389

2639

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

[[_2nd_order, _with_linear_symmetries]]

0.191

2640

\[ {}\sin \left (t \right ) y^{\prime \prime }+\cos \left (t \right ) y^{\prime }+\frac {y}{t} = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.930

2641

\[ {}\left ({\mathrm e}^{t}-1\right ) y^{\prime \prime }+{\mathrm e}^{t} y^{\prime }+y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.022

2642

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

[[_2nd_order, _with_linear_symmetries]]

0.281

2643

\[ {}t^{3} y^{\prime \prime }+\sin \left (t^{2}\right ) y^{\prime }+t y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.804

2644

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

[[_2nd_order, _with_linear_symmetries]]

1.105

2645

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

[_Laguerre]

0.831

2646

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

[[_2nd_order, _with_linear_symmetries]]

0.859

2647

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

[[_2nd_order, _with_linear_symmetries]]

0.931

2648

\[ {}4 t y^{\prime \prime }+3 y^{\prime }-3 y = 0 \]

[[_Emden, _Fowler]]

0.818

2649

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

[[_2nd_order, _with_linear_symmetries]]

0.869

2650

\[ {}t^{2} y^{\prime \prime }-y^{\prime } t -\left (t^{2}+\frac {5}{4}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.854

2651

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

[[_2nd_order, _with_linear_symmetries]]

0.944

2652

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

[_Lienard]

0.788

2653

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

[_Laguerre, [_2nd_order, _linear, ‘_with_symmetry_[0,F(x)]‘]]

0.861

2654

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

[[_2nd_order, _with_linear_symmetries]]

0.914

2655

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

[_Laguerre]

0.909

2656

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

[[_2nd_order, _with_linear_symmetries]]

1.226

2657

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

[[_2nd_order, _with_linear_symmetries]]

1.270

2658

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

[[_2nd_order, _with_linear_symmetries]]

1.157

2659

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

[[_2nd_order, _with_linear_symmetries]]

0.163

2660

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

[_Lienard]

0.596

2661

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

[_Bessel]

0.790

2662

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

[_Laguerre]

0.957

2663

\[ {}t \left (1-t \right ) y^{\prime \prime }+\left (\gamma -\left (\alpha +\beta +1\right ) t \right ) y^{\prime }-\alpha \beta y = 0 \]

[_Jacobi]

1.232

2664

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

[[_2nd_order, _with_linear_symmetries]]

1.045

2665

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

[[_2nd_order, _with_linear_symmetries]]

0.828

2666

\[ {}t y^{\prime \prime }+y^{\prime }-4 y = 0 \]

[[_Emden, _Fowler]]

0.731

2667

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

[[_2nd_order, _with_linear_symmetries]]

0.810

2668

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

[_Bessel]

1.168

2669

\[ {}t y^{\prime \prime }+3 y^{\prime }-3 y = 0 \]

[[_Emden, _Fowler]]

1.225

2670

\[ {}t^{2} y^{\prime \prime }+t p \left (t \right ) y^{\prime }+q \left (t \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

23.343

2671

\[ {}y^{\prime \prime }-5 y^{\prime }+4 y = {\mathrm e}^{2 t} \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.275

2672

\[ {}2 y^{\prime \prime }+y^{\prime }-y = {\mathrm e}^{3 t} \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.280

2673

\[ {}y^{\prime \prime }+2 y^{\prime }+y = {\mathrm e}^{-t} \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.289

2674

\[ {}y^{\prime \prime }+y = t^{2} \sin \left (t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.382

2675

\[ {}y^{\prime \prime }+3 y^{\prime }+7 y = \cos \left (t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.629

2676

\[ {}y^{\prime \prime }+y^{\prime }+y = t^{3} \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.502

2677

\[ {}y^{\prime \prime \prime }-6 y^{\prime \prime }+11 y^{\prime }-6 y = {\mathrm e}^{4 t} \]
i.c.

[[_3rd_order, _with_linear_symmetries]]

0.317

2678

\[ {}y^{\prime \prime }-3 y^{\prime }+2 y = {\mathrm e}^{-t} \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.269

2679

\[ {}y^{\prime \prime }+y = \sin \left (t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.310

2680

\[ {}y^{\prime \prime }+y = t \sin \left (t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.378

2681

\[ {}y^{\prime \prime }-2 y^{\prime }+y = {\mathrm e}^{t} t \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.229

2682

\[ {}y^{\prime \prime }-2 y^{\prime }+7 y = \sin \left (t \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.559

2683

\[ {}y^{\prime \prime }+y^{\prime }+y = 1+{\mathrm e}^{-t} \]
i.c.

[[_2nd_order, _with_linear_symmetries]]

0.488

2684

\[ {}y^{\prime \prime }+y = \left \{\begin {array}{cc} 2 & 0\le t \le 3 \\ 3 t -7 & 3<t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.740

2685

\[ {}y^{\prime \prime }+2 y^{\prime }+y = 2 \left (t -3\right ) \operatorname {Heaviside}\left (t -3\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.716

2686

\[ {}y^{\prime \prime }+y^{\prime }+y = \operatorname {Heaviside}\left (t -\pi \right )-\operatorname {Heaviside}\left (t -2 \pi \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

7.858

2687

\[ {}y^{\prime \prime }+4 y = \left \{\begin {array}{cc} 1 & 0\le t <4 \\ 0 & 4<t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.852

2688

\[ {}y^{\prime \prime }+y = \left \{\begin {array}{cc} \sin \left (t \right ) & 0\le t <\pi \\ \cos \left (t \right ) & \pi \le t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.104

2689

\[ {}y^{\prime \prime }+y = \left \{\begin {array}{cc} \cos \left (t \right ) & 0\le t <\frac {\pi }{2} \\ 0 & \frac {\pi }{2}\le t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.885

2690

\[ {}y^{\prime \prime }+2 y^{\prime }+y = \left \{\begin {array}{cc} \sin \left (2 t \right ) & 0\le t <\frac {\pi }{2} \\ 0 & \frac {\pi }{2}\le t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

1.574

2691

\[ {}y^{\prime \prime }+y^{\prime }+7 y = \left \{\begin {array}{cc} t & 0\le t <2 \\ 0 & 2\le t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

145.414

2692

\[ {}y^{\prime \prime }+y = \left \{\begin {array}{cc} t^{2} & 0\le t <1 \\ 0 & 1\le t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.869

2693

\[ {}y^{\prime \prime }-2 y^{\prime }+y = \left \{\begin {array}{cc} 0 & 0\le t <1 \\ t & 1\le t <2 \\ 0 & 2\le t \end {array}\right . \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.953

2694

\[ {}y^{\prime \prime }+4 y^{\prime }+5 y = \delta \left (t -1\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.843

2695

\[ {}y^{\prime \prime }+4 y = \sin \left (t \right )+\delta \left (t -\pi \right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.618

2696

\[ {}y^{\prime \prime }+y^{\prime }+y = 2 \delta \left (t -1\right )-\delta \left (t -2\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

143.712

2697

\[ {}y^{\prime \prime }+2 y^{\prime }+y = {\mathrm e}^{-t}+3 \delta \left (t -3\right ) \]
i.c.

[[_2nd_order, _linear, _nonhomogeneous]]

0.548

2698

\[ {}\left [\begin {array}{c} x^{\prime }=6 x-3 y \\ y^{\prime }=2 x+y \end {array}\right ] \]

system_of_ODEs

0.430

2699

\[ {}\left [\begin {array}{c} x^{\prime }=-2 x+y+t \\ y^{\prime }=-4 x+3 y-1 \end {array}\right ] \]

system_of_ODEs

0.510

2700

\[ {}\left [\begin {array}{c} x^{\prime }=6 x-3 y \\ y^{\prime }=2 x+y \end {array}\right ] \]

system_of_ODEs

0.433