Math Question

Sub-Zero · Nov 9, 2003

lets say something said between 20 and 90.

would you think that includes 20 and 90, or does not include 20 and 90?
(im doing linear programming, so im on the greater than less than parts)

thx9000 · Nov 9, 2003

Between does not include the endpoints.

revexrevex · Nov 9, 2003

Thats an ambigious question

1. If you mean how many numbers there are between 20 and 90, then there are 71

2. If you want to define a range, than it probably includes 20 and 90

samoth · Nov 9, 2003

Includes. However, if you are talking computer programming, this may be wrong. In normal mathematics, it includes the numbers unless symbology represents otherwise (or if it implicitly implies otherwise).

Sub-Zero · Nov 9, 2003

thank you both.

ill stick with thx's reply since he said it more definately with propper punctuation

and i didnt understand the last guys response

samoth · Nov 9, 2003

revexrevex said:
Thats an ambigious question

Agreed. We don't really know the context in which it is being asked.

revexrevex · Nov 9, 2003

samoth said:
Includes. However, if you are talking computer programming, this may be wrong. In normal mathematics, it includes the numbers unless symbology represents otherwise (or if it implicitly implies otherwise).

agree

revexrevex · Nov 9, 2003

SublimeZM said:
thank you both.

ill stick with thx's reply since he said it more definately with propper punctuation

and i didnt understand the last guys response

This is the most direct case of ignorance I have witnessed in a while

Sub-Zero · Nov 9, 2003

Christmas tree problem

monica pety runs a gift shop in which she sells expensive trees at christmas time. her supplier, connie furr, chargers her 80$ for each real tree and 160$ for each artificial tree. she can buy between 20 and 90 real trees, inclusive, but up to 100 artificial trees. connie can supply anywhere between 50 and 120 trees total, but requires the number of artifical trees ordered be at least half the number of real trees. monica is hardup for cash this year and wants to invest the minum feasible amount in trees. how many of each kind should she buy? what is her minumum feasible investment?[

Sub-Zero · Nov 9, 2003

revexrevex said:
This is the most direct case of ignorance I have witnessed in a while

it was a joke.

i obviously havnt made my decision yet, and i had a smily face to show my jokage...sheesh

samoth · Nov 9, 2003

I would take that question to include 20 and 90, and 50 and 120.

If someone looks to be age 18 to 20, does that mean they can only be 19 years old?

HumorMe · Nov 9, 2003

I would guess it is between those two numbers.

It doesn't say < or > than or = to 20 and 90.

Sub-Zero · Nov 9, 2003

samoth said:
Includes. However, if you are talking computer programming, this may be wrong. In normal mathematics, it includes the numbers unless symbology represents otherwise (or if it implicitly implies otherwise).

and no, not talking computer programming, talking linear programming. to find feasable regions and all of that.

so does that count as normal mathematics?

Sub-Zero · Nov 9, 2003

samoth said:
I would take that question to include 20 and 90, and 50 and 120.

If someone looks to be age 18 to 20, does that mean they can only be 19 years old?

very good point...i origninally had it down as greater than or equal to, but then i thought why would this specifically say between instead of another word...

bleh ill probably just stick greater than or equal to.

thanks alot for your help guys

samoth · Nov 9, 2003

SublimeZM said:
and no, not talking computer programming, talking linear programming. to find feasable regions and all of that.

so does that count as normal mathematics?

Heh, yep. I was just trying to emphasize my lack of knowledge in computers by saying that it would not be "normal" math

Sub-Zero · Nov 9, 2003

or maybe ill just do greater than, instead of greater than equal to...

Sub-Zero · Nov 9, 2003

iv decided to do the non equal to, this way i can look on the persons next to me, and fill in the dashed lines on the graph, and put a line under the < and > before the teacher collects the homework, whereas erasing and redoing would take more time

HumorMe · Nov 9, 2003

SublimeZM said:
very good point...i origninally had it down as greater than or equal to, but then i thought why would this specifically say between instead of another word...

bleh ill probably just stick greater than or equal to.

thanks alot for your help guys

My wife is a math teacher and I had her look at this and she said with the information provided by you that it wouldn't include the start and end points.

Sub-Zero · Nov 9, 2003

alright, < > it is.

extend my thanks to your wife too.

thx9000 · Nov 9, 2003

HumorMe said:
My wife is a math teacher and I had her look at this and she said with the information provided by you that it wouldn't include the start and end points.

This is simple discrete mathematics. Between does not include the endpoints. Dictionary.com does not include the endpoints. Ugh.

HumorMe · Nov 9, 2003

SublimeZM said:
alright, < > it is.

extend my thanks to your wife too.

Sure thing. When I make love to her tonight, I'll mention your name.

Sub-Zero · Nov 9, 2003

dont get upset if she mentions my name too

HumorMe · Nov 9, 2003

SublimeZM said:
dont get upset if she mentions my name too

Got me!

nzafi · Nov 9, 2003

I like the way everyone ignores the word inclusive......she can buy between 20 and 90 real trees, inclusive,......

thx9000 · Nov 9, 2003

nzafi said:
I like the way everyone ignores the word inclusive......she can buy between 20 and 90 real trees, inclusive,......

Yup, good point. Too bad it didn't make it onto the thread until post #9.

Sub-Zero · Nov 9, 2003

so it really did include the 20 and 90?

HumorMe · Nov 9, 2003

SublimeZM said:
so it really did include the 20 and 90?

I was responding to your initial post. I didn't read any other post by you until right now.

You included "inclusive" in your second question.

thx9000 · Nov 9, 2003

SublimeZM said:
so it really did include the 20 and 90?

Based on post 1: No.

Based on post 9: Yes.

samoth · Nov 9, 2003

You didn't really even need the word 'inclusive' to know the answer. It was implicitly implied and inherent in and to the question. To the people talking discrete mathematics and line endpoints, you were looking too deeply into the question.

If only I could recognize when I myself am looking too deeply into a question, I would probably spend much less time doing problem sets :bawling:

.

SublimeZM, if it makes you feel any better, it only gets harder from here! Well, maybe that won't help. If you want real help with math problems (real as in, better than a bodybuilding chat board

) try going over to the Physics Forums for better help... they have places to post homework questions.

Sub-Zero · Jun 22, 2011

thanks for the math help EF, ya'll got me where i am today <3

bigpokey · Jun 22, 2011

lolololol SublimeZM!

UA_Iron · Jun 22, 2011

Old school bro

samoth · Jun 23, 2011

UA_Iron said:
Old school bro

Physics still > engineering

:cow:

CoBra666 · Jun 23, 2011

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