2.2.119 Problems 11801 to 11900

Table 2.239: Main lookup table. Sorted sequentially by problem number.

#

ODE

CAS classification

Solved?

time (sec)

11801

\[ {}x y^{\prime \prime }+\left (a b \,x^{2}+b -5\right ) y^{\prime }+2 a^{2} \left (b -2\right ) x^{3} y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.317

11802

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

[[_2nd_order, _with_linear_symmetries]]

1.631

11803

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

[[_2nd_order, _with_linear_symmetries]]

1.740

11804

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.644

11805

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

[[_2nd_order, _with_linear_symmetries]]

1.299

11806

\[ {}x y^{\prime \prime }+\left (a \,x^{2}+b x +c \right ) y^{\prime }+\left (A \,x^{2}+B x +\operatorname {C0} \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.901

11807

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

[[_2nd_order, _with_linear_symmetries]]

0.823

11808

\[ {}x y^{\prime \prime }+\left (a \,x^{3}+b \right ) y^{\prime }+a \left (b -1\right ) x^{2} y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.461

11809

\[ {}x y^{\prime \prime }+x \left (a \,x^{2}+b \right ) y^{\prime }+\left (3 a \,x^{2}+b \right ) y = 0 \]

[[_2nd_order, _exact, _linear, _homogeneous]]

1.499

11810

\[ {}x y^{\prime \prime }+\left (a \,x^{3}+b \,x^{2}+2\right ) y^{\prime }+b x y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.752

11811

\[ {}x y^{\prime \prime }+\left (a b \,x^{3}+b \,x^{2}+a x -1\right ) y^{\prime }+a^{2} b \,x^{3} y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.796

11812

\[ {}x y^{\prime \prime }+\left (a \,x^{3}+b \,x^{2}+c x +d \right ) y^{\prime }+\left (d -1\right ) \left (a \,x^{2}+b x +c \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.534

11813

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

[[_2nd_order, _with_linear_symmetries]]

0.746

11814

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

[[_2nd_order, _with_linear_symmetries]]

0.809

11815

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

[[_2nd_order, _with_linear_symmetries]]

0.513

11816

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

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

1.895

11817

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

[[_2nd_order, _with_linear_symmetries]]

0.886

11818

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

[[_2nd_order, _with_linear_symmetries]]

1.421

11819

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

[[_2nd_order, _with_linear_symmetries]]

0.740

11820

\[ {}x y^{\prime \prime }+\left (a b \,x^{n}+b -3 n +1\right ) y^{\prime }+a^{2} n \left (b -n \right ) x^{2 n -1} y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.830

11821

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

[[_2nd_order, _with_linear_symmetries]]

0.712

11822

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

[[_2nd_order, _with_linear_symmetries]]

0.947

11823

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

[[_2nd_order, _with_linear_symmetries]]

0.604

11824

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

[[_2nd_order, _with_linear_symmetries]]

1.149

11825

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

[[_2nd_order, _with_linear_symmetries]]

1.468

11826

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

[[_2nd_order, _with_linear_symmetries]]

1.209

11827

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.534

11828

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

[[_2nd_order, _with_linear_symmetries]]

1.138

11829

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

[[_2nd_order, _with_linear_symmetries]]

1.558

11830

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

[[_2nd_order, _with_linear_symmetries]]

6.009

11831

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

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

1.407

11832

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

[[_Emden, _Fowler]]

0.850

11833

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

[[_2nd_order, _with_linear_symmetries]]

0.753

11834

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

[[_2nd_order, _with_linear_symmetries]]

0.998

11835

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

[[_2nd_order, _with_linear_symmetries]]

1.011

11836

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

[[_2nd_order, _with_linear_symmetries]]

0.535

11837

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

[[_2nd_order, _with_linear_symmetries]]

0.542

11838

\[ {}x^{2} y^{\prime \prime }-\left (a \,x^{3}+\frac {5}{16}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

3.194

11839

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

[[_2nd_order, _with_linear_symmetries]]

0.586

11840

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

[[_2nd_order, _with_linear_symmetries]]

0.904

11841

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

[[_2nd_order, _with_linear_symmetries]]

0.214

11842

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

[[_2nd_order, _with_linear_symmetries]]

0.179

11843

\[ {}x^{2} y^{\prime \prime }+\left (a \,x^{3 n}+b \,x^{2 n}+\frac {1}{4}-\frac {n^{2}}{4}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.199

11844

\[ {}x^{2} y^{\prime \prime }+\left (a \,x^{2 n} \left (b \,x^{n}+c \right )^{m}+\frac {1}{4}-\frac {n^{2}}{4}\right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.377

11845

\[ {}x^{2} y^{\prime \prime }+a x y^{\prime }+b y = 0 \]

[[_Emden, _Fowler]]

1.576

11846

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

[[_2nd_order, _with_linear_symmetries]]

1.049

11847

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

[[_2nd_order, _with_linear_symmetries]]

1.075

11848

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

[_Bessel]

0.965

11849

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

[[_Bessel, _modified]]

1.082

11850

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

[[_2nd_order, _with_linear_symmetries]]

3.594

11851

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

[[_2nd_order, _with_linear_symmetries]]

1.429

11852

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

[[_2nd_order, _with_linear_symmetries]]

1.331

11853

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

[[_2nd_order, _with_linear_symmetries]]

0.814

11854

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

[[_2nd_order, _with_linear_symmetries]]

1.096

11855

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

[[_2nd_order, _with_linear_symmetries]]

0.384

11856

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

[[_2nd_order, _with_linear_symmetries]]

0.819

11857

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

[[_2nd_order, _with_linear_symmetries]]

0.888

11858

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

[[_2nd_order, _with_linear_symmetries]]

1.290

11859

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

[[_2nd_order, _with_linear_symmetries]]

1.134

11860

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

[[_2nd_order, _with_linear_symmetries]]

1.347

11861

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

[[_2nd_order, _with_linear_symmetries]]

2.151

11862

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

[[_2nd_order, _with_linear_symmetries]]

4.410

11863

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

[[_2nd_order, _with_linear_symmetries]]

1.284

11864

\[ {}x^{2} y^{\prime \prime }+x \left (a \,x^{2}+b x +c \right ) y^{\prime }+\left (A \,x^{3}+B \,x^{2}+C x +d \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

0.953

11865

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

[[_2nd_order, _with_linear_symmetries]]

1.085

11866

\[ {}x^{2} y^{\prime \prime }+a \,x^{n} y^{\prime }+\left (a b \,x^{n +2 m}-b^{2} x^{4 m +2}+a m \,x^{n -1}-m^{2}-m \right ) y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.143

11867

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

[[_2nd_order, _with_linear_symmetries]]

0.833

11868

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

[[_2nd_order, _with_linear_symmetries]]

0.708

11869

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

[[_2nd_order, _with_linear_symmetries]]

0.861

11870

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

[[_2nd_order, _with_linear_symmetries]]

0.846

11871

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

[_Gegenbauer]

0.379

11872

\[ {}\left (-a^{2}+x^{2}\right ) y^{\prime \prime }+b y^{\prime }-6 y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

1.086

11873

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

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

2.179

11874

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

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

1.477

11875

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

[_Gegenbauer]

0.727

11876

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

[_Gegenbauer]

0.714

11877

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

[_Gegenbauer]

1.553

11878

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

[_Gegenbauer]

1.110

11879

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

[_Gegenbauer]

1.112

11880

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

[[_2nd_order, _with_linear_symmetries]]

0.932

11881

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

[_Gegenbauer]

1.105

11882

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

[[_2nd_order, _with_linear_symmetries]]

1.273

11883

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

[[_2nd_order, _with_linear_symmetries]]

1.217

11884

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

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

273.079

11885

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

[[_2nd_order, _exact, _linear, _homogeneous]]

1.570

11886

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

[[_2nd_order, _with_linear_symmetries]]

63.453

11887

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

[[_2nd_order, _with_linear_symmetries]]

44.601

11888

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

[[_2nd_order, _with_linear_symmetries]]

390.181

11889

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

[[_2nd_order, _with_linear_symmetries]]

0.892

11890

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

[[_2nd_order, _with_linear_symmetries]]

1.124

11891

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

[[_2nd_order, _with_linear_symmetries]]

2.019

11892

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

[[_2nd_order, _with_linear_symmetries]]

2.497

11893

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

[_Jacobi]

1.291

11894

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

[[_2nd_order, _with_linear_symmetries]]

1.209

11895

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

[_Jacobi]

0.530

11896

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

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

1.747

11897

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

[[_2nd_order, _exact, _linear, _homogeneous]]

35.358

11898

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

[[_2nd_order, _with_linear_symmetries]]

3.889

11899

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

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

5.798

11900

\[ {}\left (a \,x^{2}+2 b x +c \right ) y^{\prime \prime }+3 \left (a x +b \right ) y^{\prime }+d y = 0 \]

[[_2nd_order, _with_linear_symmetries]]

5.970