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# PS1-20

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SVP
Joined: 16 Oct 2003
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PS1-20 [#permalink]  07 Jun 2004, 19:30
00:00

Difficulty:

(N/A)

Question Stats:

0% (00:00) correct 0% (00:00) wrong based on 0 sessions
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Manager
Joined: 02 Jun 2004
Posts: 154
Location: san jose,ca
Followers: 3

Kudos [?]: 18 [0], given: 0

D.
sqr(x+1)-(sqr(x)+1)
=sqr(x)+2x+1 - sqr(x) -1
=2x
SVP
Joined: 16 Oct 2003
Posts: 1813
Followers: 4

Kudos [?]: 56 [0], given: 0

I am having hard time understanding x^2 bar. Please someone elaborate.
Manager
Joined: 02 Jun 2004
Posts: 154
Location: san jose,ca
Followers: 3

Kudos [?]: 18 [0], given: 0

Think slightly at abstract level.
x bar = x+1
meaning "anything" bar = "anything" +1;

In other words whatever you want to find the bar for, just add 1.

few examples
y bar = y + 1
2y bar = 2y + 1
2x bar = 2x + 1
similarly
(x^2) bar = (x^2)+1

Hope this helps.
SVP
Joined: 16 Oct 2003
Posts: 1813
Followers: 4

Kudos [?]: 56 [0], given: 0

GoalStanford wrote:
Think slightly at abstract level.
x bar = x+1
meaning "anything" bar = "anything" +1;

In other words whatever you want to find the bar for, just add 1.

few examples
y bar = y + 1
2y bar = 2y + 1
2x bar = 2x + 1
similarly
(x^2) bar = (x^2)+1

Hope this helps.

Don't You think 2X bar = 2(x + 1) here rather than 2x + 1 or 2x + 2 as it says wherever you have x bar replace it with x + 1.

I am still confused.
Manager
Joined: 02 Jun 2004
Posts: 154
Location: san jose,ca
Followers: 3

Kudos [?]: 18 [0], given: 0

(2x) bar is (2x)+1 because bar is for whole thing.
if you are talking about 2(x bar), then it is 2(x+1).
Manager
Joined: 26 May 2004
Posts: 74
Location: knoxville
Followers: 1

Kudos [?]: 0 [0], given: 0

According to question x(bar) =x+1 where x is an integer ...means adding 1 to the value of inter under the bar ...
hence x^2(bar) means value of integer x^2 +1
i hope it helps u Bhai
SVP
Joined: 16 Oct 2003
Posts: 1813
Followers: 4

Kudos [?]: 56 [0], given: 0

Now I C what you are saying.....

Thanks for deMoronising me.
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