# Yahoo奇摩 網頁搜尋

1. ### form two maths

... 45cm. 2007-08-08 20:59:15 補充： For question 1, there is some modificationThe time it takes for the pumping machine to pump away 1/3 of the water should be (27m x 12m x 2.5m...

分類：科學及數學 > 數學 2007年08月17日

2. ### 唔識做功課25

.... Solution 2y² = x y² = x/2 y = ±√(x/2) For some (actually each this time ) value of x, there are more than one corresponding value of y, therefore...

分類：科學及數學 > 數學 2014年08月27日

3. ### 三角和perfect square問題5條奧數高手請進20分

...irrational. Hence the assumption leads to a contradiction. 5) Pls. allow some time for me to think further.

分類：科學及數學 > 數學 2010年05月05日

...2008-03-17 20:32:07 補充： Sorry for some mistakes for Q1, [tanθ﹣tan(90° ﹣θ)]/[tan...theta; + 1)/tanθ] = [(tan^2θ﹣1)/tanθ)]& times ;[tanθ/(tan^2θ + 1)] = (tan^2θ﹣1...

分類：科學及數學 > 數學 2008年03月19日

5. ### [Applied maths] question about projectile motion

As follows: 圖片參考：http://i117.photobucket.com/albums/o61/billy_hywung/Aug07/Crazyapp21.jpg 圖片參考：http://i117.photobucket.com/albums/o61/billy_hywung/Aug07/Crazyapp22.jpg 圖片參考：http://i117.photobucket.com/albums/o61...

分類：科學及數學 > 數學 2007年08月21日

6. ### from.4 MI

...n can be divided by 2 for p times when the quotient reaches an odd...1 has a factor of x + 1 for odd number K. ...it is a must that n = 2^m for some integer m. On the contrary, we...

分類：科學及數學 > 數學 2009年12月02日

7. ### P = Np Conjecture (反)

...force search by a single computer processor, it is necessary for many processors to search the set in parallel, ... "...set of all subsets, these subsets has some relationship within themselves that can help solve the problem...

分類：科學及數學 > 數學 2008年03月14日

8. ### Importance of directed numbers

...because 0 + 5 + (-3) = 0 + 5 - 3 = 2 As an example for time . Suppose Amy takes 40 minutes... number can help calculate the accumulate value of some quantities like time in this example.

分類：科學及數學 > 數學 2014年02月10日

9. ### eigenvector

For a matrix A, sometimes we would like to know those vectors x that ...name eigenvectors of A). In that case, Ax is some vector parallel to x, and hence equals to some constanst times x. If that constant is k (I can&#39;t type the Greek...

分類：科學及數學 > 數學 2008年01月22日

10. ### Question from Apostol - Mathematical Analysis

...4)^3 e^(-C) x (2/n^4) ≧ AΣ1/n for some constant A&gt;0 Since the series ...over [0,∞). Next we look at part (a). This time , let S be the set S={ [nπ - 1/n^(7/2), n...

分類：科學及數學 > 數學 2008年02月12日