HP 50G help

[Brad Barton]

(07-23-2015 10:18 PM)Hlib Wrote:  

(07-23-2015 09:32 PM)rprosperi Wrote:  Is there a space between the "-" and the "1" in the 3rd line? This is the difference between the 2 state ments minus and one vs. the single statement "-1". Probably the culprit...

Yes, there is a space. I studied manuals very carefully and I couldn't be mistaken in this simple example . I also didn't miss any '¬' there where it is necessary. Now to me laziness to check all this by the 101st time to tell - doesn't work. How it can be: almost all examples work except the mentioned? I will try further ...

This program works fine on my 50g. I did make a couple of mistakes when I initially entered the program.

1) I forgot to turn of the alpha lock after I was done with the input statement. This caused my 2nd set of double quotes to only show one double quote, instead of a pair. Since the double quotes are a reserved expression, I doubt that a alpha-generated double quote is interpreted the same as a pair of them generated from the normal program entry mode.

2) I had to eliminate the space between the negative sign and the 1 in the input format statement.

Once I corrected those problems the program ran correctly. I didn't include any '¬' symbols.

I'm not sure if you're making the same mistakes as I did, but I thought I'd provide another data point.

Brad