绝对值是指一个数在坐标轴上所对应点到原点的距离叫做这个数的绝对值，绝对值用“ | |”来表示。今天我们就来说一下GMAT数学绝对值。
|x|=
，有|x|<
；|x|>
例题：OG13-P275-1
What is the value of |x| ?
(1) x=-|x|
(2) x2 = 4
A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D EACH statement ALONE is sufficient.
E Statements (1) and (2) TOGETHER are NOT sufficient.
解析：条件一很明显不充分，条件二，可以求出 |x| =2，充分，所以选B
例题：OG16-P186-111
If [x] denotes the least integer greater than or equal to x, is [x] =0 ?
(1) -1 < x < 1
(2) x < 0
A Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C BOTH statement TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D EACH statement ALONE is sufficient.
E Statements (1) and (2) TOGETHER are NOT sufficient.
解析：题干：如果[X]表示的是比x大或等于的最小整数，那么请问[x]等不等于0?
注意：题干说的是[X]是整数，没说x是整数，即x有可能是小数。
解答：(1)当-1
(2)当x<0时，x可以是很多很多取值，所以不充分。
联立(1)(2)当-1
所以选C
》》点击了解GMAT数学不等式
以上就是关于GMAT数学绝对值的内容介绍，希望考生通过以上内容，不断夯实自己的知识点，熟练做题技巧，提升解题能力以及分析能力，争取都能取得理想成绩。您还可能关注：
