whats zero times undefined??

Question

0 x (any numerical value) = 0
undefined x (any numerical value) = undefined
0 x undefined = ?????

Answer 1

Are you trying to multiply 0 times (3/0) or something? Things can be undefined for a number of reasons, and how that affects its multiplication by zero depends.

Short answer: You can't really do it because something that's undefined aren't even in the Complex numbers and our binary operations aren't particularly good at dealing with supra-Complex numbers.

Answer 2

The answer to 0 x undefined is actually contained within the second example,

undefined x (any numerical value) = undefined

So undefined x 0 = undefined, thus 0 x undefined = undefined.

Answer 3

I'll assume by undefined you mean infinity. The truth is zero times infinity is anything you want it to be!!

One way of obtaining infinity is any number divided by zero eg.

1/0. Mutliply this by zero, the zeros cancel and zero times infinity = 1.!

Answer 4

undefine
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EDIT: Don't follow the rules too strictly is all I have to say.
EDIT: Actually I have more to say...
Undefine doesn't mean infinity. constant / 0 is usually interpretted as infinity, but this is a miconception. Anything divided by 0 is undefine, but if the denominator APPROACHES 0, the limit would be infinity.

Answer 5

I would think that throwing anything undefined into an expression would render the whole thing undefined. I don't see any way out of that.

Answer 6

0 times ANYTHING is always 0. In this case the fact that you are multiplying by 0 defines the answer, so the fact that the other number is "undefined" becomes irrelevant.

Answer 7

Zero - 0 times any number is 0

Answer 8

undefined