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Difficulty:
35%
(medium)
Question Stats:
69% (01:39) correct
31%
(01:47)
wrong
based on 256
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For any integer x, [x] is defined by the equation [x] = x + 1. which of the following is equal to
A. 0
B. 2
C. -2x-
D. 2x
E. 2x-
I'm not sure how to write this question down over here as it has different functions! Attached image. Kindly provide Explanations. Thanks!
A. 0
B. 2
C. -2x-
D. 2x
E. 2x-
I'm not sure how to write this question down over here as it has different functions! Attached image. Kindly provide Explanations. Thanks!
Attachments
Question.jpg [ 12.91 KiB | Viewed 5790 times ]
![For any integer x, [x] is defined by the equation [x] = x +](/forum/styles/gmatclub_light/imageset/icon_post_target_unread.svg "For any integer x, [x] is defined by the equation [x] = x +"){kind=icon}
06 Jul 2013, 07:14
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\(([x])^2=(x+1)^2\)
\([x^2]=x^2+1\)
\(([x])^2-[x^2]=x^2+2x+1-x^2-1=2x\)
\([x^2]=x^2+1\)
\(([x])^2-[x^2]=x^2+2x+1-x^2-1=2x\)
06 Jul 2013, 08:23
Kudos
Bookmarks
fozzzy
DS Functions and Custom Characters questions: search.php?search_id=tag&tag_id=40
PS Functions and Custom Characters questions: search.php?search_id=tag&tag_id=61
Recently bumped questions fro this category: new-project-review-discuss-and-get-kudos-points-153555.html#p1238175
Hope it helps.
