1(a)(i) a(4) = 13 and a(5) = 21 (ii) L = 2(n - 1) a(n) = 1 + 2(1) + 2(2) + ... + 2(n - 1) = 1 + 2[1 + 2 + 3 + ... + (n - 1)] = 1 + 2n(n - 1)/2 = 1 + n(n - 1) (b)(i) L = 1 + n(n - 1) + 2 * (n - 1) = 1 + n^2 - n + 2n - 2 = n^2 + n - 1 (ii) Sum = n * a(n) + [2 + 4 + ... + 2(n - 1)] = n + n^3 - n^2 + n(n - 1) = n^3 (a) The no. of...
a1 = 1 a2= 1+2(1) = 3 a3= 1 + 2(1) + 2(2) =7 a(1) = 1 a(2) = 1 + 2(1) a(3) = 1 + 2(1) + 2(2) . . . a(n) =1+ 2(1) + 2(2) + ‧‧‧+ L 所以 L 是 2(n-1) a(n) = 1 + 2[ 1 + 2 + 3 + ...... + (n-1) ] 注意 : 括號中共有 (n-1) 項，不是 n 項，代入 (首項 + 末項)X項數/2時要小心 = 1 + 2{[1+(n-1)](n-1)/2} = 1 + (n-1) + (n-1)^2...
要讀幾年? "two calendar years, including summer terns , by part-time study" http://buar.hkbu.edu.hk/uploads/files/pg_prospectus...
分類：教育及參考書 > 高等教育 (大學或以上) 2012年12月03日
... of dance is it will take place every Friday afternoon for a school tern . All students who want course-marks and grades must...
...: Birds: 1. New Zealand Fairy Tern 2. Kakapo 3. Chatham Island Taiko 4. White...
1. This statement is not correct because the internal energy of a substance is also affected by the substance's mass, material and state, but not only its temperature. Therefore, the temperature of X may not be higher than that of Y. 2. When the...
...x+b), the coefficient of the x term is a postive number and the constsnt tern is a negative number. (x+a)(x+b)=x^2+ (a+b)x+ab a+b=+ve ab=-ve...
... the sequence -3, 9,-27 Write down the general term, hence the 100 tern . R = -27/9 = 9/-3 = -3, a = -3 General term = -3(-3)^(n-1) The...