6.119 Problems 11801 to 11900

Table 6.237: Main lookup table sequentially arranged

#

ODE

Mathematica

Maple

Sympy

11801

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

11802

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

11803

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

11804

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

11805

\[ {} [x^{\prime }\left (t \right )+y^{\prime }\left (t \right )+y \left (t \right ) = f \left (t \right ), x^{\prime \prime }\left (t \right )+y^{\prime \prime }\left (t \right )+y^{\prime }\left (t \right )+x \left (t \right )+y \left (t \right ) = g \left (t \right )] \]

11806

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

11807

\[ {} [x^{\prime }\left (t \right )-y^{\prime }\left (t \right )+x \left (t \right ) = 2 t, x^{\prime \prime }\left (t \right )+y^{\prime }\left (t \right )-9 x \left (t \right )+3 y \left (t \right ) = \sin \left (2 t \right )] \]

11808

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

11809

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

11810

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

11811

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

11812

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

11813

\[ {} [x^{\prime \prime }\left (t \right )+x \left (t \right )+y \left (t \right ) = -5, y^{\prime \prime }\left (t \right )-4 x \left (t \right )-3 y \left (t \right ) = -3] \]

11814

\[ {} \left [x^{\prime \prime }\left (t \right ) = \left (3 \cos \left (a t +b \right )^{2}-1\right ) c^{2} x \left (t \right )+\frac {3 c^{2} y \left (t \right ) \sin \left (2 a t b \right )}{2}, y^{\prime \prime }\left (t \right ) = \left (3 \sin \left (a t +b \right )^{2}-1\right ) c^{2} y \left (t \right )+\frac {3 c^{2} x \left (t \right ) \sin \left (2 a t b \right )}{2}\right ] \]

11815

\[ {} [x^{\prime \prime }\left (t \right )+6 x \left (t \right )+7 y \left (t \right ) = 0, y^{\prime \prime }\left (t \right )+3 x \left (t \right )+2 y \left (t \right ) = 2 t] \]

11816

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

11817

\[ {} [a_{1} x^{\prime \prime }\left (t \right )+b_{1} x^{\prime }\left (t \right )+c_{1} x \left (t \right )-A y^{\prime }\left (t \right ) = B \,{\mathrm e}^{i \omega t}, a_{2} y^{\prime \prime }\left (t \right )+b_{2} y^{\prime }\left (t \right )+c_{2} y \left (t \right )+A x^{\prime }\left (t \right ) = 0] \]

11818

\[ {} [x^{\prime \prime }\left (t \right )+a \left (x^{\prime }\left (t \right )-y^{\prime }\left (t \right )\right )+b_{1} x \left (t \right ) = c_{1} {\mathrm e}^{i \omega t}, y^{\prime \prime }\left (t \right )+a \left (y^{\prime }\left (t \right )-x^{\prime }\left (t \right )\right )+b_{2} y \left (t \right ) = c_{2} {\mathrm e}^{i \omega t}] \]

11819

\[ {} [\operatorname {a11} x^{\prime \prime }\left (t \right )+\operatorname {b11} x^{\prime }\left (t \right )+\operatorname {c11} x \left (t \right )+\operatorname {a12} y^{\prime \prime }\left (t \right )+\operatorname {b12} y^{\prime }\left (t \right )+\operatorname {c12} y \left (t \right ) = 0, \operatorname {a21} x^{\prime \prime }\left (t \right )+\operatorname {b21} x^{\prime }\left (t \right )+\operatorname {c21} x \left (t \right )+\operatorname {a22} y^{\prime \prime }\left (t \right )+\operatorname {b22} y^{\prime }\left (t \right )+\operatorname {c22} y \left (t \right ) = 0] \]

11820

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

11821

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

11822

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

11823

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

11824

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

11825

\[ {} [x^{\prime }\left (t \right ) = y \left (t \right )-z \left (t \right ), y^{\prime }\left (t \right ) = x \left (t \right )+y \left (t \right ), z^{\prime }\left (t \right ) = x \left (t \right )+z \left (t \right )] \]

11826

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

11827

\[ {} [a x^{\prime }\left (t \right ) = b c \left (y \left (t \right )-z \left (t \right )\right ), b y^{\prime }\left (t \right ) = c a \left (z \left (t \right )-x \left (t \right )\right ), c z^{\prime }\left (t \right ) = a b \left (x \left (t \right )-y \left (t \right )\right )] \]

11828

\[ {} [x^{\prime }\left (t \right ) = c y \left (t \right )-b z \left (t \right ), y^{\prime }\left (t \right ) = a z \left (t \right )-c x \left (t \right ), z^{\prime }\left (t \right ) = b x \left (t \right )-a y \left (t \right )] \]

11829

\[ {} [x^{\prime }\left (t \right ) = x \left (t \right )+y \left (t \right )-z \left (t \right ), y^{\prime }\left (t \right ) = y \left (t \right )+z \left (t \right )-x \left (t \right ), z^{\prime }\left (t \right ) = z \left (t \right )+x \left (t \right )-y \left (t \right )] \]

11830

\[ {} [x^{\prime }\left (t \right ) = -3 x \left (t \right )+48 y \left (t \right )-28 z \left (t \right ), y^{\prime }\left (t \right ) = -4 x \left (t \right )+40 y \left (t \right )-22 z \left (t \right ), z^{\prime }\left (t \right ) = -6 x \left (t \right )+57 y \left (t \right )-31 z \left (t \right )] \]

11831

\[ {} [x^{\prime }\left (t \right ) = 6 x \left (t \right )-72 y \left (t \right )+44 z \left (t \right ), y^{\prime }\left (t \right ) = 4 x \left (t \right )-4 y \left (t \right )+26 z \left (t \right ), z^{\prime }\left (t \right ) = 6 x \left (t \right )-63 y \left (t \right )+38 z \left (t \right )] \]

11832

\[ {} [x^{\prime }\left (t \right ) = a x \left (t \right )+g y \left (t \right )+\beta z \left (t \right ), y^{\prime }\left (t \right ) = g x \left (t \right )+b y \left (t \right )+\alpha z \left (t \right ), z^{\prime }\left (t \right ) = \beta x \left (t \right )+\alpha y \left (t \right )+c z \left (t \right )] \]

11833

\[ {} [t x^{\prime }\left (t \right ) = 2 x \left (t \right )-t, t^{3} y^{\prime }\left (t \right ) = -x \left (t \right )+t^{2} y \left (t \right )+t, t^{4} z^{\prime }\left (t \right ) = -x \left (t \right )-t^{2} y \left (t \right )+t^{3} z \left (t \right )+t] \]

11834

\[ {} [a t x^{\prime }\left (t \right ) = b c \left (y \left (t \right )-z \left (t \right )\right ), b t y^{\prime }\left (t \right ) = c a \left (z \left (t \right )-x \left (t \right )\right ), c t z^{\prime }\left (t \right ) = a b \left (x \left (t \right )-y \left (t \right )\right )] \]

11835

\[ {} [x_{1}^{\prime }\left (t \right ) = a x_{2} \left (t \right )+b x_{3} \left (t \right ) \cos \left (c t \right )+b x_{4} \left (t \right ) \sin \left (c t \right ), x_{2}^{\prime }\left (t \right ) = -a x_{1} \left (t \right )+b x_{3} \left (t \right ) \sin \left (c t \right )-b x_{4} \left (t \right ) \cos \left (c t \right ), x_{3}^{\prime }\left (t \right ) = -b x_{1} \left (t \right ) \cos \left (c t \right )-b x_{2} \left (t \right ) \sin \left (c t \right )+a x_{4} \left (t \right ), x_{4}^{\prime }\left (t \right ) = -b x_{1} \left (t \right ) \sin \left (c t \right )+b x_{2} \left (t \right ) \cos \left (c t \right )-a x_{3} \left (t \right )] \]

11836

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

11837

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

11838

\[ {} [x^{\prime }\left (t \right ) = x \left (t \right ) \left (a \left (p x \left (t \right )+q y \left (t \right )\right )+\alpha \right ), y^{\prime }\left (t \right ) = y \left (t \right ) \left (\beta +b \left (p x \left (t \right )+q y \left (t \right )\right )\right )] \]

11839

\[ {} [x^{\prime }\left (t \right ) = h \left (a -x \left (t \right )\right ) \left (c -x \left (t \right )-y \left (t \right )\right ), y^{\prime }\left (t \right ) = k \left (b -y \left (t \right )\right ) \left (c -x \left (t \right )-y \left (t \right )\right )] \]

11840

\[ {} [x^{\prime }\left (t \right ) = y \left (t \right )^{2}-\cos \left (x \left (t \right )\right ), y^{\prime }\left (t \right ) = -y \left (t \right ) \sin \left (x \left (t \right )\right )] \]

11841

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

11842

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

11843

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

11844

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

11845

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

11846

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

11847

\[ {} [x \left (t \right ) = t x^{\prime }\left (t \right )+f \left (x^{\prime }\left (t \right ), y^{\prime }\left (t \right )\right ), y \left (t \right ) = t y^{\prime }\left (t \right )+g \left (x^{\prime }\left (t \right ), y^{\prime }\left (t \right )\right )] \]

11848

\[ {} \left [x^{\prime \prime }\left (t \right ) = a \,{\mathrm e}^{2 x \left (t \right )}-{\mathrm e}^{-x \left (t \right )}+{\mathrm e}^{-2 x \left (t \right )} \cos \left (y \left (t \right )\right )^{2}, y^{\prime \prime }\left (t \right ) = {\mathrm e}^{-2 x \left (t \right )} \sin \left (y \left (t \right )\right ) \cos \left (y \left (t \right )\right )-\frac {\sin \left (y \left (t \right )\right )}{\cos \left (y \left (t \right )\right )^{3}}\right ] \]

11849

\[ {} \left [x^{\prime \prime }\left (t \right ) = \frac {k x \left (t \right )}{\left (x \left (t \right )^{2}+y \left (t \right )^{2}\right )^{{3}/{2}}}, y^{\prime \prime }\left (t \right ) = \frac {k y \left (t \right )}{\left (x \left (t \right )^{2}+y \left (t \right )^{2}\right )^{{3}/{2}}}\right ] \]

11850

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

11851

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

11852

\[ {} [x^{\prime }\left (t \right ) = x \left (t \right ) \left (y \left (t \right )-z \left (t \right )\right ), y^{\prime }\left (t \right ) = y \left (t \right ) \left (z \left (t \right )-x \left (t \right )\right ), z^{\prime }\left (t \right ) = z \left (t \right ) \left (x \left (t \right )-y \left (t \right )\right )] \]

11853

\[ {} [x^{\prime }\left (t \right )+y^{\prime }\left (t \right ) = x \left (t \right ) y \left (t \right ), y^{\prime }\left (t \right )+z^{\prime }\left (t \right ) = y \left (t \right ) z \left (t \right ), x^{\prime }\left (t \right )+z^{\prime }\left (t \right ) = x \left (t \right ) z \left (t \right )] \]

11854

\[ {} \left [x^{\prime }\left (t \right ) = \frac {x \left (t \right )^{2}}{2}-\frac {y \left (t \right )}{24}, y^{\prime }\left (t \right ) = 2 x \left (t \right ) y \left (t \right )-3 z \left (t \right ), z^{\prime }\left (t \right ) = 3 x \left (t \right ) z \left (t \right )-\frac {y \left (t \right )^{2}}{6}\right ] \]

11855

\[ {} [x^{\prime }\left (t \right ) = x \left (t \right ) \left (y \left (t \right )^{2}-z \left (t \right )^{2}\right ), y^{\prime }\left (t \right ) = y \left (t \right ) \left (z \left (t \right )^{2}-x \left (t \right )^{2}\right ), z^{\prime }\left (t \right ) = z \left (t \right ) \left (x \left (t \right )^{2}-y \left (t \right )^{2}\right )] \]

11856

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

11857

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

11858

\[ {} [\left (x \left (t \right )-y \left (t \right )\right ) \left (x \left (t \right )-z \left (t \right )\right ) x^{\prime }\left (t \right ) = f \left (t \right ), \left (-x \left (t \right )+y \left (t \right )\right ) \left (y \left (t \right )-z \left (t \right )\right ) y^{\prime }\left (t \right ) = f \left (t \right ), \left (z \left (t \right )-x \left (t \right )\right ) \left (z \left (t \right )-y \left (t \right )\right ) z^{\prime }\left (t \right ) = f \left (t \right )] \]