bible-truths.com/forums

Please login or register.

Login with username, password and session length
Advanced search  

News:

Need Account Help?  Email bibletruths.forum@gmail.com   

Forgotten password reminders does not work. Contact the email above and state what you want your password changed to. (it must be at least 8 characters)

Pages: [1]   Go Down

Author Topic: For those who are good in algebra.... Is 2 = 1 ??  (Read 2589 times)

0 Members and 1 Guest are viewing this topic.

mmijares

  • Guest
For those who are good in algebra.... Is 2 = 1 ??
« on: May 13, 2010, 10:02:10 AM »

Let x = y
Multiply both sides by x, the equation becomes x2 = xy
Subtract both sides by y2, the equation becomes x2 - y2 = xy - y2
Factor both sides, the equation becomes (x + y)(x - y) = y(x - y)
Divide both sides by (x - y), the equation becomes x + y = y

If x = y, then the equation can be written as y + y = y
or 2y = y
or 2 = 1 !!!  8)
Logged

mmijares

  • Guest
Re: For those who are good in algebra.... Is 2 = 1 ??
« Reply #1 on: May 13, 2010, 07:44:44 PM »

The contradiction is in the first line, x = y.  x can equal x.  And y can equal y.  But two different unknowns cannot equal each other.  It is a contradiction of terms.

You have a point but the flaw is not in the first line.  Although two different unknowns, it MAY, it CAN, it is POSSIBLE that the two is equal.
Logged

Astrapho

  • Guest
Re: For those who are good in algebra.... Is 2 = 1 ??
« Reply #2 on: May 14, 2010, 10:22:25 AM »

As far as I know, x can = y. I came across a few questions in my maths papers whose answers are x=y before.

Holy crapxors! There must be a logic error somewhere! D: Let's sub some values:

1-1 = 1-1
(1+1)(1-1) = 1(1-1)

I think I see our problem. D:

Edit: The only real solution is that y=0 . That works. :9
« Last Edit: May 14, 2010, 10:28:29 AM by Astrapho »
Logged

mmijares

  • Guest
Re: For those who are good in algebra.... Is 2 = 1 ??
« Reply #3 on: May 14, 2010, 08:41:36 PM »

Holy crapxors! There must be a logic error somewhere! D: Let's sub some values:

Yes, there is!

When I was in my 1st year high...this drove me mad.
The multiplication, the subtraction, the factoring in the above mathematical statements are all logical...but......BUT!......the division is not  ;D
Logged

Astrapho

  • Guest
Re: For those who are good in algebra.... Is 2 = 1 ??
« Reply #4 on: May 15, 2010, 03:27:56 AM »

Okay, this is driving me mad. D; I see nothing wrong with the division?
Logged

mmijares

  • Guest
Re: For those who are good in algebra.... Is 2 = 1 ??
« Reply #5 on: May 16, 2010, 07:38:38 PM »

Okay, this is driving me mad. D; I see nothing wrong with the division?

Hi Astrapho,

Since x = y, the above division is a division by zero.  In ordinary arithmetic, division by zero is not a legitimate operation.  (Source: http://en.wikipedia.org/wiki/Division_by_zero)
Logged

longhorn

  • Guest
Re: For those who are good in algebra.... Is 2 = 1 ??
« Reply #6 on: May 17, 2010, 12:06:45 AM »

Sometimes I have been going number 2 and 1 at the same time, so I would say yes... most definitely 2 can equal 1.

Longhorn
Logged

Dave in Tenn

  • Administrator
  • Bible-Truths Forum Member
  • *
  • Offline Offline
  • Posts: 4171
    • FaceBook David Sanderson
Re: For those who are good in algebra.... Is 2 = 1 ??
« Reply #7 on: May 17, 2010, 02:31:38 AM »

let h=head.

2h > 1

People shouldn't do math with letters.
Logged
Heb 10:32  But you must continue to remember those earlier days, how after you were enlightened you endured a hard and painful struggle.
Pages: [1]   Go Up
 

Page created in 0.042 seconds with 27 queries.