### The Maxima on-line user's manual

Algebra Calculator

#### Derivdegree

Function: derivdegree (<expr>, <y>, <x>) Returns the highest degree of the derivative of the dependent variable <y> with respect to the independent variable <x> occuring in <expr>.

```     Example:
(%i1) diff (y, x, 2) + diff (y, z, 3) + diff (y, x) * x^2;
3     2
d y   d y    2 dy
(%o1)                   --- + --- + x  --
3     2      dx
dz    dx
(%i2) derivdegree (%, y, x);
(%o2)                           2```

```(%o1)                                true
(%i2) ```

### Related Examples

##### derivdegree-diff

'diff (y, x, 2) + 'di...

derivdegree (%, y, x);

Calculate

##### derivdegree-diff

'diff (y+x^2, x, 1);

derivdegree (%, y, x);

Calculate

##### derivdegree-diff

'diff (y, x, 2);

derivdegree (%, y, x);

Calculate

##### derivdegree-diff

'diff (y, x, 2);

derivdegree (%, y, x);

Calculate

##### derivdegree-diff

'diff (y, x, 2);

derivdegree (%, y, x);

Calculate

? derivdegree;

Calculate

##### derivdegree-diff

'diff (y, x, 2) + 'di...

derivdegree (%, y, x);

Calculate

##### derivdegree-diff

'diff (y+x, x, 1);

derivdegree (%, y, x);

Calculate

? derivdegree;

Calculate

? derivdegree;

Calculate