[原创]7.15 北美 JJ （730 50 40）对不起大家 记性差 有想起一定补充

fannyyudan

以下是引用bigtone在2006-7-17 6:53:00的发言：
感谢LZ先，再祝申请顺利！
关于楼上的提问我的理解如下：
改写条件为：

1)R<1-x

2)R>+SQR(2x)    x>0 或 R<-SQR(2x)    x<0

如图所示，有点乱，凑合看吧，红色直线为 r=1-x，所以红线以下是不等式1表达的范围，蓝线是不等式2表达的范围，分别为左侧蓝线下和右侧蓝线上，粉红色的部分是两个不等式的交集。

绿色直线是r=x

由图可知在r=x的绿色直线上下均有一块粉红色区域，所以r<x的结果是不可知的。

答案应该是E。

请指正。

   

[upload=jpg]UploadFile/2006-7/20067176551144322.jpg[/upload]

第二个条件图不对，当x<0时r可以去任意值，而X>0的情况应该是以x轴为中线，原点为顶点的一条开口朝右的抛物线，y值取抛物线与y轴中间的那两部分。最后结果也是E

bibliopongo

thanks a lot for sharing

here are several questions i don't understand, Can NN help me out? thanks a lot

8. xy坐标上有8个点，任意3个点都不会在一条直线上, 请问这8个点能组成多少个不同的三角形?

16 7的202次方的十位数，答案分别是0，2，4，6，8, what is the answer?

19. 问直线y = mx + r是否经过x轴左半部分
望了 (sorry)
mr > 0

LZ, do u have this one?

Thank you very much for your helps

熏依草

以下是引用bibliopongo在2006-7-17 10:37:00的发言：

thanks a lot for sharing

here are several questions i don't understand, Can NN help me out? thanks a lot

8. xy坐标上有8个点，任意3个点都不会在一条直线上, 请问这8个点能组成多少个不同的三角形?

16 7的202次方的十位数，答案分别是0，2，4，6，8, what is the answer?

19. 问直线y = mx + r是否经过x轴左半部分
望了 (sorry)
mr > 0

LZ, do u have this one?

Thank you very much for your helps

第八题就是C8,3:从8个点中任选三个都可以

16题有规律:0,4,4,0   答案应该是4

19题画图看看啊

beibeideng

以下是引用adaliu113在2006-7-17 1:23:00的发言：
R,x integer, 问R>x?
 

1)R+X<1

2)R^2 >2x     

 

what is the answer for this one and why?

 

what is the answer for this one and why?

 

what is the answer for this one and why?

选E吧?

vanessawhy

以下是引用bibliopongo在2006-7-17 10:37:00的发言：

thanks a lot for sharing

here are several questions i don't understand, Can NN help me out? thanks a lot

8. xy坐标上有8个点，任意3个点都不会在一条直线上, 请问这8个点能组成多少个不同的三角形?

16 7的202次方的十位数，答案分别是0，2，4，6，8, what is the answer?

19. 问直线y = mx + r是否经过x轴左半部分
望了 (sorry)
mr > 0

LZ, do u have this one?

Thank you very much for your helps

都没有碰到哦。

bibliopongo

thank you very much for your responses.

sorry one more question here:

i am currently running out of the practice exam, does anyone know any link where i can download GMAT practice exam?

thank you so much...

hisiko1980

www.mba.com

only gmatprep exams...

[此贴子已经被作者于2006-7-18 10:30:30编辑过]

bibliopongo

oh i did that one

thx

kidodo

thank u....