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

Algebra Calculator

#### Featurep

Function: featurep (<a>, <f>) Attempts to determine whether the object <a> has the feature <f> on the basis of the facts in the current database. If so, it returns `true`, else `false`.

Note that `featurep` returns `false` when neither <f> nor the negation of <f> can be established.

`featurep` evaluates its argument.

See also `declare` and `features`.

```          (%i1) declare (j, even)\$
(%i2) featurep (j, integer);
(%o2)                           true```

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

### Related Examples

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate

? featurep;

Calculate

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate

##### featurep-if-linsolve-ssearch-string

if(featurep(ssearch("...

Calculate