View Full Version : quick question on calculations

ighettoboyi

12-14-2004, 01:32 AM

i know that

Lv = Av*1.84*10^8/[Vb*1728*(Fb/0.159)^2] - 0.823*sqrt(Av)

but does that mean (Av*1.84*10^8) or Av*1.85*[(10^8)/(Vb*1728*(Fb/0.159)^2)] or are they the same?? (sorry i'm kinda out of it and i'm rusty on my order of operations lol)

Nikuk

12-14-2004, 10:48 AM

BEDMAS ...

Step 1 - Brackets

Step 2 - Exponents and Roots

Step 3 - Division and Multiplication

Step 4 - Addition and Subtraction

wow... I havent heard that in such a long time... LOL

JoseMCeee

12-14-2004, 03:29 PM

mine was PEMDAS

Please excuse my dear aunt sally

or

Parantheses exponents multplication division add subtract

Nikuk

12-14-2004, 03:32 PM

yeg'xactly... bout 17 years... LoL

sumone

12-14-2004, 04:18 PM

(Av*1.84*10^8) or Av*1.85*[(10^8)/(Vb*1728*(Fb/0.159)^2)]

those aren't the same (1.84 & 1.85)...off by10^6...

you're saying is:

(A * B * C)/D

the same as

A * B * C/D

answer is yes...

ex:

if A=1, B=2, C=3, D=4,

(1 * 2 * 3)/4 = 6/4 = 3/2 = 1.5

(1 * 2 * 3/4) = 2 *.75 = 1.5

sumone

12-14-2004, 04:37 PM

also, when you divide by a number, you invert & multiply

so (A * B * C) / D =

A * B * C * 1/D

so you can say A/D or B/D or C/D times all the rest..

bcarpenterfhl

12-14-2004, 10:58 PM

yea PEMDAS is way cooler. same thing but you remember by "Please Excuse My Dear Aunt Sally".

Parenthesis

Exponent

Multiplication

Diviosion

Addition

Subtraction

shout out to seventh grade math teacher mrs. newman

JoseMCeee

12-14-2004, 11:16 PM

Theres another thing for that pemdas. I forgot how it goes tho. I think its please something mc donalds blah blah. i forgot

sumone

12-14-2004, 11:57 PM

I don't think OoO is the issue here....