1 the sum of two numbers, x and y, equals twice their products. if x=3, what is the value of y?
这道题没大看懂?请问大家是这样么?x+y=2
x+y=2xy,求y.
2 if x is an integer and x237,what is the greatest possible value of x minus the least possible value of x?
我觉得这道题x的最大值为6,最小值为0,所以选6.
a.5 b.6 c.10 d.12 e.36
选D,最大为6,最小为-6.
3 三角形ABC,角B=X度,X90 度,比较三角形的周长与3倍AC的长度的大小,答案是B
AC是最大边,所以AB+BC+AC
2.0
比较the greatest value of p与1/2的大小,答案是C
答案错了,选B p+=2p^1/2 ==1/4 1/2
4 for the line with equation y=ax+b,the x-intercept os twice the y-intercept
比较the slope of the line 与1/2的大小,答案是D,但算出来是-1/2呀
还有截距为零的情况,所以D.
5 a certain moneymarket account that had a balance of $48000 during all of last monthearned $360 in interest for the month. at what simple annual interestrate did the account earn interest last month?
答案是9%,题目没看懂
意思是一个货币市场上个月共结余48000,用它赚了360的利息,问以年单利计算每年利率是多少?
【GRE数学易错题范例解析】相关文章:
最新
2016-03-02
2016-03-02
2016-03-02
2016-03-02
2016-03-02
2016-03-02