### Related

##### elementp

elementp({2},{%r1});

Calculate

##### elementp

a=-1;

b=1;

elementp(a,{-1,2});

Calculate

##### elementp-inf-limit-not-true

lim(xn):=limit(xn,n,i...

not(true);

converges(xn):=elemen...

Calculate

##### elementp-inf-limit-not

lim(xn):=limit(xn,n,i...

converges(xn):=not(el...

converges((-1)^n);

Calculate

##### elementp-inf-limit-not-true

lim(xn):=limit(xn,n,i...

not(true);

converges(xn):=elemen...

Calculate

##### elementp

elementp (1, {reals});

Calculate

##### elementp-sin

elementp (sin(1), {si...

Calculate

##### elementp

elementp({}, {{}});

Calculate

##### elementp-intersection-not-or

not( (elementp({a},{A...

Calculate

##### elementp

a=-1;

elementp(a,{-1,2});

Calculate

### elementp

Run Example
```(%i1)elementp (sin(1), {sin(1)+sin(2)});
(%o1)                                false
(%i2)  elementp (sin(1), {cos(1), cos(2), cos(3)});
(%o2)                                false
(%i3) ```
Run Example
```elementp({2},{%r1});
(%o1)                                false
(%i2) ```
Run Example
```elementp(2,{%r});
(%o1)                                false
(%i2) ```

### Related Help

Help for Elementp