I've tried using the Solver on the following program for (x - 7)(x - 11) = 0 :

Code: Select all

```
00 { 25-byte Prgm }
01 LBL "QUAD"
02 MVAR "X"
03 RCL "X"
04 ENTER
05 7
06 -
07 X<>Y
08 11
09 -
10 x
11 .END.
```

(Shift) (Solve) (Soft key for QUAD)

OK, now I'm in the solver for program QUAD. More keys:

(9) (Soft key for X)

which should store the low estimate for X. Now to store the high estimate:

(2) (0) (Soft key for X)

To solve for X:

(Soft key for X)

I get answer "X=9.0000" which is clearly not correct (should be 11). Did I do something wrong?

I'm using Free42 2.0.21 on Linux amd64 (Debian 9.4.0).