一些比较难的英文数学题(追加20分)

发布网友 发布时间：2022-05-07 02:50

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热心网友 时间：2023-10-12 17:19

既然你问到这么难的问题，我就直接用英文了，名词什么的我想你也应该懂的。

1. since p(5 − x) = p(5 + x) , we can tell that p(x) is an even function, and is symmetric around y axis. From the properties of even function we know that sum of roots of p(x) =0.

2.Let D be the number of dollars, and C the number of cents the check is
made out for. The true value of the check then is 100*D + C cents.

The teller gives her D + 100*C cents instead. After she
spends 5 cents, she has D + 100*C - 350, which is twice 100*D + C.
This gives you one equation:
D + 100*C - 350 = 2*(100*D + C),

which can be rearranged into the form
98*C = 199*D + 350.

There is a hidden condition that you will also need:
0 <= C <= 99 and 0 <= D <= 99.
Now you need to see what the smallest value of D is that makes 199*D + 5 an exact multiple of 98. 剩下的你自己做。

第三题不会做。

第四题用cs里面的merge sort应该就能解决。

第五题不会。你这应该是米国或者加拿大奥数的题吧？普通学生连四则运算还算不对呢。。

希望前两个题对你有所帮助。

热心网友 时间：2023-10-12 17:20

1。一个多项式p(x)满足p(5?x)= p(5 + x)为所有真正的x。假设p(x)= 0也只有四个域名
　　截然不同的根。找到这些根的总和。
　　2。一个人在银行现金支票。误出纳员支付数量的美分
　　美元和美元美分。花3.50美元的人在注意,后来发现,将剩余的钱汇正是一倍分量的支票。什么是量?
　　3。让a、b、c是2005分,两个整数ab + 9 b + 81,c + + 9公元前81。证明2005也
自己做吧，好像也不难