18. It is known that 12 + 22 + ... .+n2=n(n+1)(2n+1)/6.Let H(n)=(1+3)2 +(2+
3)2+. + (n + 3)2. Which of the following are true about H(n)?
(A) The constant term is
not 0;
(B) The coefficient of the term with n is ;
(C) The coefficient of the term with n2 is
;
(D) H(50) is greater than 50000.
三、請參考下列 Student 資料表,並依下列各題之條件來完成正確之結構化查詢語言(SQL)。