### Related

##### numer-true

numer:true;

hodnota_z_db:1666.666...

Calculate

Po:[-5,-8];

P:[4,3];

Calculate

##### numer-tan

f(x), x = 3, numer;

Calculate

draw2d(fill_color = r...

draw2d(fill_color = b...

Calculate

obj: -4*x1+3*x2+x3;

cnst:[3*x1-2*x2+x3>...

Calculate

##### map

x : 4;

x;

f(x) := 4*x^3 - 10*x^...

Calculate

##### numer-solve

a: ((x/(x+1))^2)*4;

b: y = a / (16/9);

c: z = 2^x;

Calculate

y1: 430820;

y2: 470908;

p: 2;

Calculate

f(x):=7/6*x+3/2;

f(-3);

f(3);

Calculate

##### numer-tan

f(x), x = 3, numer;

Calculate

Run Example
```(%i1)load(interpol);
(%o1)         /usr/share/maxima/5.21.1/share/numeric/interpol.mac
(%i2) p:[[6.500, 0.100], [7.000, 0.143], [7.500, 0.256],[8.000, 0.441],[8.500, 0.696],[9.000, 1.022],[9.500, 1.418],[10.000, 1.886],[10.500,2.465]];
(%o2) [[6.5, 0.1], [7.0, 0.143], [7.5, 0.256], [8.0, 0.441], [8.5, 0.696],
[9.0, 1.022], [9.5, 1.418], [10.0, 1.886], [10.5, 2.465]]
(%i3) cspline(p);
3                      2
(%o3) (0.11718483063328 x  - 2.285104197349044 x  + 14.90988107511046 x
- 32.45045876288662) charfun2(x, minf, 7.0)
3                     2
+ (- 0.20504197349043 x  + 6.45882216494845 x  - 66.60837223858613 x
+ 227.1294793814432) charfun2(x, 10.0, inf)
3                      2
+ (0.13720986745214 x  - 3.808733063328413 x  + 36.06718004418251 x
- 115.1223615611189) charfun2(x, 9.5, 10.0)
3                      2
+ (- 0.031797496318114 x  + 1.007976804123691 x  - 9.691563696612471 x
+ 29.78032695139851) charfun2(x, 9.0, 9.5)
3                      2
+ (0.0059801178203231 x  - 0.012018777614116 x  - 0.51160346097222 x
+ 2.240446244477749) charfun2(x, 8.5, 9.0)
3                     2
+ (- 1.2297496318057488E-4 x  + 0.14361008836523 x  - 1.834448821796647 x
+ 5.988508100146962) charfun2(x, 8.0, 8.5)
3                      2
+ (0.0025117820324004 x  + 0.080375920471285 x  - 1.328575478645095 x
+ 4.639512518409495) charfun2(x, 7.5, 8.0)
3                     2
+ (- 0.025924153166421 x  + 0.72018446244477 x  - 6.127139543446258 x
+ 16.6359226804124) charfun2(x, 7.0, 7.5)
(%i4) f(x):=''%;
(%o4)        f(x) := "map(f,[2.3,5/7,%pi]), numer;
(%o5) [(%i6)         draw2d(        color= red,        key= "Cubic splines",        explicit(f(x),x,6.5,10.5),        point_size = 5,        color      = blue,        key        = "Sample points",        points(p));
plot```
Run Example
```load(interpol);
(%o1)         /usr/share/maxima/5.21.1/share/numeric/interpol.mac
(%i2) p:[[6.500, 0.100], [7.000, 0.143], [7.500, 0.256],[8.000, 0.441],[8.500, 0.696],[9.000, 1.022],[9.500, 1.418],[10.000, 1.886],[10.500,2.465]];
(%o2) [[6.5, 0.1], [7.0, 0.143], [7.5, 0.256], [8.0, 0.441], [8.5, 0.696],
[9.0, 1.022], [9.5, 1.418], [10.0, 1.886], [10.5, 2.465]]
(%i3) cspline(p);
3                      2
(%o3) (0.11718483063328 x  - 2.285104197349044 x  + 14.90988107511046 x
- 32.45045876288662) charfun2(x, minf, 7.0)
3                     2
+ (- 0.20504197349043 x  + 6.45882216494845 x  - 66.60837223858613 x
+ 227.1294793814432) charfun2(x, 10.0, inf)
3                      2
+ (0.13720986745214 x  - 3.808733063328413 x  + 36.06718004418251 x
- 115.1223615611189) charfun2(x, 9.5, 10.0)
3                      2
+ (- 0.031797496318114 x  + 1.007976804123691 x  - 9.691563696612471 x
+ 29.78032695139851) charfun2(x, 9.0, 9.5)
3                      2
+ (0.0059801178203231 x  - 0.012018777614116 x  - 0.51160346097222 x
+ 2.240446244477749) charfun2(x, 8.5, 9.0)
3                     2
+ (- 1.2297496318057488E-4 x  + 0.14361008836523 x  - 1.834448821796647 x
+ 5.988508100146962) charfun2(x, 8.0, 8.5)
3                      2
+ (0.0025117820324004 x  + 0.080375920471285 x  - 1.328575478645095 x
+ 4.639512518409495) charfun2(x, 7.5, 8.0)
3                     2
+ (- 0.025924153166421 x  + 0.72018446244477 x  - 6.127139543446258 x
+ 16.6359226804124) charfun2(x, 7.0, 7.5)
(%i4) f(x):=''%;
(%o4)        f(x) := "map(f,[2.3,5/7,%pi]), numer;
(%o5) [(%i6)         draw2d(        color      = red,        key        = "Cubic splines",        explicit(f(x),x,0,10),        point_size = 3,        color      = blue,        key        = "Sample points",        points(p));
plot```
Run Example
```load(interpol);
(%o1)         /usr/share/maxima/5.21.1/share/numeric/interpol.mac
(%i2) p:[[6.500, 0.100], [7.000, 0.143], [7.500, 0.256],[8.000, 0.441],[8.500, 0.696],[9.000, 1.022],[9.500, 1.418],[10.000, 1.886],[10.500,2.465]];
(%o2) [[6.5, 0.1], [7.0, 0.143], [7.5, 0.256], [8.0, 0.441], [8.5, 0.696],
[9.0, 1.022], [9.5, 1.418], [10.0, 1.886], [10.5, 2.465]]
(%i3) cspline(p);
3                      2
(%o3) (0.11718483063328 x  - 2.285104197349044 x  + 14.90988107511046 x
- 32.45045876288662) charfun2(x, minf, 7.0)
3                     2
+ (- 0.20504197349043 x  + 6.45882216494845 x  - 66.60837223858613 x
+ 227.1294793814432) charfun2(x, 10.0, inf)
3                      2
+ (0.13720986745214 x  - 3.808733063328413 x  + 36.06718004418251 x
- 115.1223615611189) charfun2(x, 9.5, 10.0)
3                      2
+ (- 0.031797496318114 x  + 1.007976804123691 x  - 9.691563696612471 x
+ 29.78032695139851) charfun2(x, 9.0, 9.5)
3                      2
+ (0.0059801178203231 x  - 0.012018777614116 x  - 0.51160346097222 x
+ 2.240446244477749) charfun2(x, 8.5, 9.0)
3                     2
+ (- 1.2297496318057488E-4 x  + 0.14361008836523 x  - 1.834448821796647 x
+ 5.988508100146962) charfun2(x, 8.0, 8.5)
3                      2
+ (0.0025117820324004 x  + 0.080375920471285 x  - 1.328575478645095 x
+ 4.639512518409495) charfun2(x, 7.5, 8.0)
3                     2
+ (- 0.025924153166421 x  + 0.72018446244477 x  - 6.127139543446258 x
+ 16.6359226804124) charfun2(x, 7.0, 7.5)
(%i4) f(x):=''%;
(%o4)        f(x) := "/* Some evaluations */      map(f,[2.3,5/7,%pi]), numer;
(%o5) [(%i6)   /* load draw package */* Plotting interpolating function */      draw2d(        color      = red,        key        = "Cubic splines",        explicit(f(x),x,0,10),        point_size = 3,        color      = blue,        key        = "Sample points",        points(p));
(%o6)            /usr/share/maxima/5.21.1/share/draw/draw.lisp
(%i7) ```

### Related Help

Help for Draw

Help for Draw2d

Help for Explicit