### Related

##### float-log-plot3d

x:500;

Ri1: R1*R2/(R1+R2)+1000;

Ri2: 4700-R2+x;

Calculate

x:1000;

y:0;

v:2000;

Calculate

x:00;

y:0;

v:1300;

Calculate

x:00;

y:0;

v:2300;

Calculate

x:7000;

y:0;

v:2200;

Calculate

##### float-log-plot3d

x:4000;

Ri1: R1*R2/(R1+R2)+1000;

Ri2: 400-R2+x;

Calculate

x:0;

y:0;

v:1000;

Calculate

x:00;

y:0;

v:1300;

Calculate

##### float-log-plot3d

x:1000;

Ri1: R1*R2/(R1+R2)+1000;

Ri2: 4700-R2+x;

Calculate

x:0;

y:0;

v:3000;

Calculate

### [float,log,plot3d]

Run Example
```(%i1)x:1000;
(%o1)                                1000
(%i2) Ri1: R1*(R2+1000)/(R1+R2+1000)+1000;
R1 (R2 + 1000)
(%o2)                        -------------- + 1000
R2 + R1 + 1000
(%i3) Ri2: 4700-R2+x;
(%o3)                              5700 - R2
(%i4) Ri3: 1+Ri1/Ri2;
R1 (R2 + 1000)
-------------- + 1000
R2 + R1 + 1000
(%o4)                      --------------------- + 1
5700 - R2
(%i5) RC:(Ri1/Ri3+600)*0.00000047;
R1 (R2 + 1000)
-------------- + 1000
R2 + R1 + 1000
(%o5)              4.7E-7 (------------------------- + 600)
R1 (R2 + 1000)
-------------- + 1000
R2 + R1 + 1000
--------------------- + 1
5700 - R2
(%i6) t:-log(1-2.67*(Ri3)/5)*RC;
R1 (R2 + 1000)
-------------- + 1000
R2 + R1 + 1000
(%o6) - 4.7E-7 (------------------------- + 600)
R1 (R2 + 1000)
-------------- + 1000
R2 + R1 + 1000
--------------------- + 1
5700 - R2
R1 (R2 + 1000)
-------------- + 1000
R2 + R1 + 1000
log(1 - 0.534 (--------------------- + 1))
5700 - R2
(%i7) plot3d(t*1000,[R2,0,4700],[R1,0,4700],[z,1,2],[elevation, 0], [azimuth, 0],[grid,150,150]);
plotfloat(t);
R1 (R2 + 1000.0)
---------------- + 1000.0
R2 + R1 + 1000.0
(%o8) - 4.7E-7 (------------------------------- + 600.0)
R1 (R2 + 1000.0)
---------------- + 1000.0
R2 + R1 + 1000.0
------------------------- + 1.0
5700.0 - 1.0 R2
R1 (R2 + 1000.0)
---------------- + 1000.0
R2 + R1 + 1000.0
log(1.0 - 0.534 (------------------------- + 1.0))
5700.0 - 1.0 R2
(%i9) ```
Run Example
```x:00;
(%o1)                                  0
(%i2) y:0;
(%o2)                                  0
(%i3) v:1300;
(%o3)                                1300
(%i4) Ri1: R1*(R2+y)/(R1+R2+y)+1000;
R1 R2
(%o4)                           ------- + 1000
R2 + R1
(%i5) Ri2: 4700-R2+x;
(%o5)                              4700 - R2
(%i6) Ri3: 1+Ri1/Ri2;
R1 R2
------- + 1000
R2 + R1
(%o6)                         -------------- + 1
4700 - R2
(%i7) RC:(Ri1/Ri3+v)*0.00000047;
R1 R2
------- + 1000
R2 + R1
(%o7)                 4.7E-7 (------------------ + 1300)
R1 R2
------- + 1000
R2 + R1
-------------- + 1
4700 - R2
(%i8) t:-log(1-2.67*(Ri3)/5)*RC;
R1 R2                                   R1 R2
------- + 1000                          ------- + 1000
R2 + R1                                 R2 + R1
(%o8) - 4.7E-7 (------------------ + 1300) log(1 - 0.534 (-------------- + 1))
R1 R2                                      4700 - R2
------- + 1000
R2 + R1
-------------- + 1
4700 - R2
(%i9) plot3d(t*1000,[R2,0,4700],[R1,0,4700],[z,1,2],[elevation, 45], [azimuth, 90],[grid,150,150]);
plotfloat(t);
R1 R2
------- + 1000.0
R2 + R1
(%o10) - 4.7E-7 (---------------------- + 1300.0)
R1 R2
------- + 1000.0
R2 + R1
---------------- + 1.0
4700.0 - 1.0 R2
R1 R2
------- + 1000.0
R2 + R1
log(1.0 - 0.534 (---------------- + 1.0))
4700.0 - 1.0 R2
(%i11) ```
Run Example
```x:1500;
(%o1)                                1500
(%i2) y:000;
(%o2)                                  0
(%i3) v:1000;
(%o3)                                1000
(%i4) Ri1: R1*(R2+y)/(R1+R2+y)+1000;
R1 R2
(%o4)                           ------- + 1000
R2 + R1
(%i5) Ri2: 4700-R2+x;
(%o5)                              6200 - R2
(%i6) Ri3: 1+Ri1/Ri2;
R1 R2
------- + 1000
R2 + R1
(%o6)                         -------------- + 1
6200 - R2
(%i7) RC:(Ri1/Ri3+v)*0.00000047;
R1 R2
------- + 1000
R2 + R1
(%o7)                 4.7E-7 (------------------ + 1000)
R1 R2
------- + 1000
R2 + R1
-------------- + 1
6200 - R2
(%i8) t:-log(1-2.67*(Ri3)/5)*RC;
R1 R2                                   R1 R2
------- + 1000                          ------- + 1000
R2 + R1                                 R2 + R1
(%o8) - 4.7E-7 (------------------ + 1000) log(1 - 0.534 (-------------- + 1))
R1 R2                                      6200 - R2
------- + 1000
R2 + R1
-------------- + 1
6200 - R2
(%i9) plot3d(t*1000,[R2,0,4700],[R1,0,4700],[z,1,2],[elevation, 0], [azimuth, 0],[grid,150,150]);
plotfloat(t);
R1 R2
------- + 1000.0
R2 + R1
(%o10) - 4.7E-7 (---------------------- + 1000.0)
R1 R2
------- + 1000.0
R2 + R1
---------------- + 1.0
6200.0 - 1.0 R2
R1 R2
------- + 1000.0
R2 + R1
log(1.0 - 0.534 (---------------- + 1.0))
6200.0 - 1.0 R2
(%i11) ```

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