Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
You are not logged in.
#1 2012-10-22 14:20:41
- skylor
- Guest
division
(9x^3 - 3x^2 + 13x - 5)/(3x - 1)
I came up with 3x^2 + -.66/3x-1 and was mark wrong.
#2 2012-10-22 14:28:33
- bobbym
- Administrator
Online
Re: division
Hi;
-.66
Did you mean to have that period there?
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#5 2012-10-22 14:38:05
- bobbym
- Administrator
Online
Re: division
Have you tried multiplying your answer by the divisor to check your work?
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#6 2012-10-22 14:44:55
- skylor
- Guest
Re: division
I think it was right but I wrote it wrong like 3x^2 + 0x - .66/3x-1 and he just marked it wrong because of that.
#7 2012-10-22 14:48:58
- bobbym
- Administrator
Online
Re: division
Hi;
So you think the answer is:
I am afraid I would mark you wrong too.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#9 2012-10-22 23:42:24
- noelevans
- Full Member
Offline
Re: division
Hi!
You might write the remainder as -2/3. The quotient is 3x^2 + 13/3. 
Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional).
LaTex is like painting on many strips of paper and then stacking them to see what picture they make.