Math help thread

[Julio.]

Brackets
Indicates
Division/Multiplication
Addition/Substraction
There is no rule that you have to do division before multiplication or vice versa. Same with addition and substraction.

ACTUALLY

Ben is right, it IS in fact BIDMAS

1+1 x 5 = ?

Answe is 6

[Ben.]

I think the guy took my description wrongly...it is clear that it is irrelevant which order you use addition or subtraction, but the word for it is BIDMAS, thus why I wrote it the way I did  :trust:
It kind of looks crap if I go:

Brackets
Indices
Division and Multiplication
Addition and Subtraction

My way of writing it looks better

[duffman]

>Implying Daco is smart at maths

[EminemRulez]

>Implying Daco is smart at maths

>impying you know how to imply
Apparently I've lost few years in the school...


Why can't we devide things by 0?

[Jellyfish]

Dividing by a number very close to zero gives you an astronomically huge number. You know that dividing a number by a fraction, say a/b, is the same as multiplying by b/a. So x divided by 1/10 is x * 10 = 10x. And x divided by 1/100 is 100x. And x divided by 1 / 100,000 is 100,000x. So as you divide by numbers closer and closer to zero, the result gets bigger and bigger.

[Daco]

Dividing by a number very close to zero gives you an astronomically huge number. You know that dividing a number by a fraction, say a/b, is the same as multiplying by b/a. So x divided by 1/10 is x * 10 = 10x. And x divided by 1/100 is 100x. And x divided by 1 / 100,000 is 100,000x. So as you divide by numbers closer and closer to zero, the result gets bigger and bigger.

If people can't understand this.

Let's say we want to devide 5 by 0.

5/0.1 = 50
5/0.01 500
5/0.0001=5000
5/0.00001=50000
5/0.000001=500000
5/0.0000001=5000000

The closer we get to 0, the higher the result is.. It's called infinity.



Hence limit exists.

lim x->0 (5/0) = infinity (depends on how to approach 0 to say it's plus infinity or minus infinity; if you approach with values closer to 0 on the right, you get +oo and if you approach on the left you get -oo).

Hope you understand.

>Implying Daco is smart at maths

orly
Post Merge: May 25, 2011, 09:42:58 am

I think the guy took my description wrongly...it is clear that it is irrelevant which order you use addition or subtraction, but the word for it is BIDMAS, thus why I wrote it the way I did  :trust:
It kind of looks crap if I go:

Brackets
Indices
Division and Multiplication
Addition and Subtraction

My way of writing it looks better

Here's a challenge for you:

8/4x6 = ?

PS: there is an answer.

[mushy]

The English National Curriculum for Numeracy taught be BODMAS at primary, obviously because indices were a top secret thing used by MI5. :m4:
BTW I hate all of those maths questions on FB. I hate even more the idiots who care enough to answer them wrong.

[Freedom]

I think the guy took my description wrongly...it is clear that it is irrelevant which order you use addition or subtraction, but the word for it is BIDMAS, thus why I wrote it the way I did  :trust:
It kind of looks crap if I go:

Brackets
Indices
Division and Multiplication
Addition and Subtraction

My way of writing it looks better

Yea, that's more like it.
also by Indicates you mean involution/exponentiation(?)

[Jellyfish]

The English National Curriculum for Numeracy taught be BODMAS at primary, obviously because indices were a top secret thing used by MI5. :m4:

 


Your explanation makes more sense Daco.
Will probably help a few.

[Norrage]

So was this a math thread or a shooting thread?

8/4x6 = ?

PS: there is an answer.

8.

[Jellyfish]

8.

He actually asked Ben the question.. 

[Daco]

He actually asked Ben the question.. 

And she's mistaken too... :hit:

[Julio.]

Here's a challenge for you:

8/4x6 = ?

PS: there is an answer.

Then you just follow the order, work it out as you go along.

8/4 is 2, Multiplied by 6 is 12

[Freedom]

Then you just follow the order, work it out as you go along.

8/4 is 2, Multiplied by 6 is 12

from left to right, just like reading a book or something. (or this text)

[Ben.]

Aha, I see what you did there

I was taught both BODMAS and BIDMAS, but BIDMAS always made more sense to me, as I was never actually told what the O stood for in BODMAS 

And yeah, I'd say 12 in that case, and it would work with the order of BIDMAS anyway  :redface: