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

Algebra Calculator

#### Dontfactor

-- Option variable: dontfactor Default value: `[]`

`dontfactor` may be set to a list of variables with respect to which factoring is not to occur. (The list is initially empty.) Factoring also will not take place with respect to any variables which are less important, according the variable ordering assumed for canonical rational expression (CRE) form, than those on the `dontfactor` list.

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

### Related Examples

##### dontfactor-expandwrt-ratsimp

im:(1/2)*((z+1)/(z-1));

fm:(1/2)*((z+1)/(z-1));

pid:p+i*ts*im+d*(n/(1...

Calculate

##### dontfactor-expand-solve

eq1:V = F * ((C*(1 - ...

res:solve(eq1, Y);

dontfactor:[H, V, M, ...

Calculate

##### dontfactor-ratsimp

im:(1/2)*((z+1)/(z-1));

fm:(1/2)*((z+1)/(z-1));

pid:p+i*ts*im+d*(n/(1...

Calculate

##### dontfactor-solve

eq1:V = F * ((C*(1 - ...

res:solve(eq1, Y);

dontfactor:[H, V, M, ...

Calculate

##### dontfactor-solve

eq1:V = F * ((C*(1 - ...

res:solve(eq1, Y);

dontfactor:[H, V, M, ...

Calculate

##### dontfactor-expandwrt-ratsimp

im:(1/2)*((z+1)/(z-1));

fm:(1/2)*((z+1)/(z-1));

pid:p+i*ts*im+d*(n/(1...

Calculate

##### dontfactor-expandwrt-ratsimp

im:(1/2)*((z+1)/(z-1));

fm:(1/2)*((z+1)/(z-1));

pid:p+i*ts*im+d*(n/(1...

Calculate

##### dontfactor-ratsimp

im:(1/2)*((z+1)/(z-1));

fm:(1/2)*((z+1)/(z-1));

pid:p+i*ts*im+d*(n/(1...

Calculate

##### dontfactor-expandwrt-ratsimp

im:(1/2)*((z+1)/(z-1));

fm:(1/2)*((z+1)/(z-1));

pid:p+i*ts*im+d*(n/(1...

Calculate

##### dontfactor-ratsimp

im:(1/2)*((z+1)/(z-1));

fm:(1/2)*((z+1)/(z-1));

pid:p+i*ts*im+d*(n/(1...

Calculate