八月二十一少量北美数学狗

nininana

一个很有意思的题，印象很深刻。

一个X，Y组成的直角坐标系，A点坐标（0，0），B点坐标（3，1），C点坐标一共有6种可能（1，3）（-1，3）（-3，1）（-3，-1）（-1，-3）（1，-3），问BC的长度一共有几种可能，选项有2，3，4，5，6

然后还有

1/(16^4) + 1/(81^4)+1/(25^8) = 2^x + 3^x + 5^x
问x的值是多少

还有

一个圆里面套一个小圆，告诉你小圆的直径L，大圆的与小圆直径差为2，问你2个圆的perimeter差

。。。额，一时想不起来

写作ISSUE
At the fast-paced world, employers can benefit more from energy and new ideas of younger workers than experience and wisdom of older workers.

ARGUMENT
People are convinced that unviersity hospitals are better than private or community hospitals. However, in fact, in our region of hospital, university hospitals do not offer better quality of care than other kinds of hospitals. T

nininana

ARGUMENT CONTINUE
People are convinced that unviersity hospitals are better than private or community hospitals. However, in fact, in our region of hospital, university hospitals do not offer better quality of care than other kinds of hospitals. Reasons are: 1, 15 percent less of doctors; 2, 20 less percent of success in treating patients; 3, make less profit; 4, university hospital spent less on the medical staff; 5, doctors divide their time among conducting research, teaching and treating.

wy007

很好!

有没有阅读?

孤独的长跑者

5种。
x=-16。
2π。

xiahuowang5

谢谢～～

Mariahuang

谢谢