### Related

##### is-notequal

eq1: 1;

eq2: 2;

is (notequal (eq1,eq2));

Calculate

##### is

is([true,false]);

Calculate

##### is

lis:[1,1,1,1,1,1,2,2,...

maxi(lis);

Calculate

Calculate

##### is-subst

RESPONSE[1]:"3,*,9,-,...

RESPONSE[1]:subst(","...

is(RESPONSE[1]);

Calculate

is(x=x);

Calculate

##### is-part-subst

is(subst([x= 1 , y = ...

is(subst([x= 1 , y = ...

Calculate

f(x):=1/sqrt(x);

g(x):=3/sqrt(x);

h(x):=2*x^4;

Calculate

Calculate

LR : a;

is(LR=a);

Calculate

### is

Run Example
```(%i1)declare(k, integer);
(%o1)                                done
(%i2) declare(x, real);
(%o2)                                done
(%i3) is(%e^(%k) <
%e^(%k*x^2));
(%o3)                               unknown
(%i4) ```
Run Example
```rs:100+60+80;
(%o1)                                 240
(%i2) is:10/rs;
1
(%o2)                                 --
24
(%i3) ua:is*80;
10
(%o3)                                 --
3
(%i4) rp:160*80/(160+80);
160
(%o4)                                 ---
3
(%i5) rg:rp+120;
520
(%o5)                                 ---
3
(%i6) ig:ua/rg;
1
(%o6)                                 --
52
(%i7) ```
Run Example
```a: -3/10 + sqrt(141)/30;
sqrt(141)   3
(%o1)                           --------- - --
30       10
(%i2) c: combine(a);
sqrt(141) - 9
(%o2)                            -------------
30
(%i3) b: (-9+sqrt(141))/30;
sqrt(141) - 9
(%o3)                            -------------
30
(%i4) d: combine(b);
sqrt(141) - 9
(%o4)                            -------------
30
(%i5) is (a = b);
(%o5)                                false
(%i6) (-9 - sqrt(141))/30;
- sqrt(141) - 9
(%o6)                           ---------------
30
(%i7) ```

Help for Is