### Related

##### depends-diff-ode2-solve

eq: 'diff(y, t) = del...

deq: ode2(eq, y, t);

depends(y, t);

Calculate

(cframe_flag:false,gc...

lg:diag_matrix(-(1-2*...

Calculate

##### depends-hessian

hessian (xyz - x^2 - ...

depends (F, [a, b, c]);

hessian (F, [a, b, c]);

Calculate

##### depends-hessian

hessian (-6*x^2+(2*a+...

depends (F, [a, b]);

hessian (F, [a, b]);

Calculate

##### depends-hessian

hessian (4*(s^4)+(t^4...

depends (F, [s, t]);

hessian (F, [s, t]);

Calculate

##### depends-hessian

hessian (x^4+xy, [x, ...

depends (F, [a, b]);

hessian (F, [a, b]);

Calculate

depends(r, t);

v='diff(r,t);

Calculate

##### depends-jacobian

jacobian ([rcos(x), r...

depends ([F, G], [y,...

jacobian ([F, G], [y...

Calculate

##### depends-jacobian

jacobian ([(a+b)/(a+b...

depends ([F, G], [y,...

jacobian ([F, G], [y...

Calculate

##### depends-diff-solve

eq1:e^(x*y)=2;

depends(x,y);

solve(diff(eq1,x),'di...

Calculate

### depends

Run Example
(%o1)                                r(t)
(%i2) depends(r, t);
(%o2)                               [r(t)]
(%i3) v:diff(r, t);
dr
(%o3)                                 --
dt
(%i4) e:(a-r^3)^(1/3);
3 1/3
(%o4)                             (a - r )
(%i5) w:diff(e, t);
2 dr
r  --
dt
(%o5)                            - -----------
3 2/3
(a - r )
(%i6) f:w^2;
4  dr 2
r  (--)
dt
(%o6)                             -----------
3 4/3
(a - r )
(%i7) plot2d(diff(f,t), [r, -10, 10]);
plot
Run Example
hessian ((x+y+z)^2, [x, y, z]);
[ 2  2  2 ]
[         ]
(%o1)                             [ 2  2  2 ]
[         ]
[ 2  2  2 ]
(%i2)  depends (F, [a, b]);
(%o2)                              [F(a, b)]
(%i3)  hessian (F, [a, b]);
[   2      2   ]
[  d F    d F  ]
[  ---   ----- ]
[    2   da db ]
[  da          ]
(%o3)                          [              ]
[   2      2   ]
[  d F    d F  ]
[ -----   ---  ]
[ da db     2  ]
[         db   ]
(%i4)
Run Example
hessian (-x^2-y^2-x*y, [x, y]);
[ - 2  - 1 ]
(%o1)                            [          ]
[ - 1  - 2 ]
(%i2)  depends (F, [a, b]);
(%o2)                              [F(a, b)]
(%i3)  hessian (F, [a, b]);
[   2      2   ]
[  d F    d F  ]
[  ---   ----- ]
[    2   da db ]
[  da          ]
(%o3)                          [              ]
[   2      2   ]
[  d F    d F  ]
[ -----   ---  ]
[ da db     2  ]
[         db   ]
(%i4)

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