Mathcad paradox: lb:=lb - en error, lb:=kg - all is OK!

[ValeryOchkov]

Mathcad paradox: lb:=lb - en error, lb:=kg - all is OK!

See attached files - Mathcad 15 and Mathcad Prime!

[RichardJ · Accepted solution]

Roundoff.

Got to be careful making comparisons of floating point numbers when your worksheet options are set to "Use exact equality for comparisons and truncation"

[ValeryOchkov]

Richard Jackson wrote:

Roundoff.

Got to be careful making comparisons of floating point numbers when your worksheet options are set to "Use exact equality for comparisons and truncation"

Thanks Richard, I knew it.

But the paradox is a paradox.

Life (Mathcad) would be uninteresting without paradoxes.

[RichardJ]

I think I recall something like this coming up on the forums once before. Mathcad can be a little deceptive when using units, because although you may enter the numerical part of a quantity as "1" (e.g. 1 lb), which has an exact binary representation, it is not necessarily stored internally as "1".