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Maximum and minimum value watch

1. If and , find
a) the greatest possible value of .
b) the smallest possible valus of .

a) Can the answer be "undefined number"? The book wrote the value is = undefined number.
b) Can the answer be "undefined number"? The book wrote the value is = undefined number.

So I'm confused. Thanks.
2. Yes.
Yes.
Thanks but why? I don't understand why it can be a undefined number.
If you say the value is +infinity or -infinity respectively...then it's more acceptable to me.
4. How can anything over zero be given as an answer to that question? Surely it needs to be a real number for starters?
5. Sounds like an awful book, to be honest.
6. (Original post by Civ-217)
If and , find
a) the greatest possible value of .
b) the smallest possible valus of .

a) Can the answer be "undefined number"? The book wrote the value is = undefined number.
b) Can the answer be "undefined number"? The book wrote the value is = undefined number.

So I'm confused. Thanks.
Anything number, divided by 0 gives you an undefined answer. And zero is a possibility as y can equal 0.
7. (Original post by Civ-217)
Thanks but why? I don't understand why it can be a undefined number.
If you say the value is +infinity or -infinity respectively...then it's more acceptable to me.
The greatest value is +infinity and the smallest value is -infinity.
The greatest value is +infinity and the smallest value is -infinity.
Which means? Sorry I'm slow.
For a number near to 0 from right, the value is +infinity for part a. But is this 'number' acceptable?

(Original post by DFranklin)
Sounds like an awful book, to be honest.

(Original post by kam_007)
Anything number, divided by 0 gives you an undefined answer. And zero is a possibility as y can equal 0.
Yes but why is the answer an undefined number?
9. "Undefined" or "unbounded" looks about the best answer you can give. It's the stuff that's truly horrible. Plus of course it's not a well posed question, given you can't give a proper answer to it (i.e. there is no "greatest value of x/y", so the question shouldn't be asking for it).
10. (Original post by DFranklin)
"Undefined" or "unbounded" looks about the best answer you can give. It's the stuff that's truly horrible. Plus of course it's not a well posed question, given you can't give a proper answer to it (i.e. there is no "greatest value of x/y", so the question shouldn't be asking for it).
Thanks.
The greatest value is +infinity and the smallest value is -infinity.
Infinity isn't a real number!
12. (Original post by Kolya)
Infinity isn't a real number!
In other words, the value of x/y can be made as large as we please or as small as we please.

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