find the values of the real numbers x and y if
(4x-√-64)-(6+2yi^3) is purely imaginary
呀sir 玩我的,原來y 計唔到
另外,
prove,by using mathematical induction,that for all +ve integers n , the following propostion is true <--此乃m2 數
n^3+5n is divisble by 6我只prove 到可比3 整除
[ scfkipper在2010-10-01 13:24重新編輯此帖 ]