### Related

##### abs-define-float-plot2d-realroots

define(f(x), (x^4 + 3...

define(g(x), abs(4*x/...

f(5.5);

Calculate

##### abs-define-float-plot2d-realroots

define(f(x), (x^4 + 3...

define(g(x), abs(4*x/...

f(3.2);

Calculate

##### abs-define-float-plot2d-realroots

define ( h(x), abs(2*...

plot2d (h(x), [x,-20,...

float(h(-5/4));

Calculate

##### abs-define-float-plot2d-realroots

define(f(x), (x^4+3*x...

define(g(x), abs(4*x)...

f(5.5);

Calculate

##### abs-define-float-plot2d-realroots

define(f(x), (x^4+3*x...

define(g(x), abs(4*x)...

f(5.5);

Calculate

##### abs-define-float-plot2d-realroots

define(f(x), (x^4 + 3...

define(g(x), abs(4*x/...

f(3.2);

Calculate

##### abs-define-float-plot2d-realroots

define ( h(x), abs(2*...

plot2d (h(x), [x,-10,...

float(h(-5/4));

Calculate

##### abs-define-float-plot2d-realroots

define(f(x), (x^4+3*x...

define(g(x), abs(4*x)...

f(5.5);

Calculate

##### abs-define-float-plot2d-realroots

define(f(x), (x^4+3*x...

define(g(x), abs(4*x)...

f(5.5);

Calculate

##### abs-define-float-plot2d-realroots

define ( h(x), abs(2*...

plot2d (h(x), [x,-10,...

float(h(-5/4));

Calculate

### [abs,define,float,plot2d,realroots]

Run Example
```(%i1)define(f(x), (x^4+3*x^3-2*x^2+x-13)/(5*x^3+7*x^2+5));
4      3      2
x  + 3 x  - 2 x  + x - 13
(%o1)                  f(x) := -------------------------
3      2
5 x  + 7 x  + 5
(%i2) define(g(x), abs(4*x)/(%e));
- 1
(%o2)                       g(x) := 4 %e    abs(x)
(%i3) f(5.5);
(%o3)                          1.283764453450948
(%i4) g(-%e);
(%o4)                                  4
(%i5) f(3.2);
(%o5)                          0.71878263761849
(%i6) float(g(-3.2));
(%o6)                          4.708856846994462
(%i7) float(r:realroots(f(x)=0));
(%o7)          [x = - 3.823911637067795, x = 1.527592271566391]
(%i8) plot2d((g(x)), [x,0,5], [y,-10,10]);
plot```
Run Example
```define ( h(x), abs(2*x^5-5*x^4-3*x^3-8*x^2+5*x+20) );
!   5      4      3      2           !
(%o1)           h(x) := !2 x  - 5 x  - 3 x  - 8 x  + 5 x + 20!
(%i2) plot2d (h(x), [x,-20,20], [y,35,45]);
plotfloat(h(-5/4));
(%o3)                            11.201171875
(%i4) s: realroots( h(x)=40 );
!   5      4      3      2           !
(%o4)            [!2 x  - 5 x  - 3 x  - 8 x  + 5 x + 20! = 40]
(%i5) ```
Run Example
```define(f(x), (x^4 + 3*x^3 - 2*x^2 + x - 13)/(5*x^3 + 7*x^2 + 5));
4      3      2
x  + 3 x  - 2 x  + x - 13
(%o1)                  f(x) := -------------------------
3      2
5 x  + 7 x  + 5
(%i2) define(g(x), abs(4*x/%e));
- 1
(%o2)                       g(x) := 4 %e    abs(x)
(%i3) f(5.5);
(%o3)                          1.283764453450948
(%i4) g(-%e);
(%o4)                                  4
(%i5) f(3.2);
(%o5)                          0.71878263761849
(%i6) float(g(-3.2));
(%o6)                          4.708856846994462
(%i7) r: float(realroots (f(x)=0));
(%o7)          [x = - 3.823911637067795, x = 1.527592271566391]
(%i8) plot2d (g(x), [x, 0,5]);
plot```

### Related Help

Help for Abs

Help for Define

Help for Float

Help for Plot2d

Help for Realroots