sequencesSignedsumsWe give a sufficient and necessary condition on the sequence {an} of integers that for any integer l ≥ 1, every integer can be represented in the form εlal +εl+1al+1 +· ··+εkak, where εi∈ {-1, 1} (i = l, l+1, . . ., k). This generalizes ...
We can see the first few terms of the sequence on the screen.We could also obtain the terms of the sequence using the TABLE feature. First, put the graphing utility in SEQuence mode. Press Y= and enter the formula for the sequence into the graphing utility. See Figure 4. Set up the ...
If the sum of the first n terms of a sequence is 6n2−n, which of the following is/are true?( ) Ⅰ. 22 is a term of the sequence. Ⅱ. The 1st term of the sequence is 5. Ⅲ. The sequence is a geometric sequence. 若某数列的首n项之和为6n2−n,则下列何者正确?( ) Ⅰ.22...
If the terms of a sequence are t1, t2, t3, . . . , tn, what is the value of n ? (1) The sum of the n terms is 3,124. (2) The average (arithmetic mean) of the n terms is 4. 选项: A、Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient. ...
sum /n= average sum is given by 1) and average is given by 2) then you get n ....
If sum of n terms of a sequence is given by S(n)=2n^(2)+3n. Find its 5... 04:25 Let Vr denote the sum of first r terms of an arithmetic progression (A... 05:01 Let Vr denote the sum of the first r terms of an arithmetic progressio... 07:01 Let Vr denote the sum of...
6 (a) These are the first four terms of a sequence.1915 11 7(i) Write down the next two terms of this sequence.Answer(a)(i)... and ... [2](ii) Write down the rule for finding the next term of this sequence.Answer(a)(ii)...](iii) Find an expression for the nth term ...
Use each of the following rules to write down the first five terms of a sequence.a) n
Find the first five terms of the sequence{an}={(−15)n}. Terms of a Sequence: If a sequence follows a particular term in every term, then we can find its general term on the form of a variablen. This general term helps us to find every term of the sequence. As, for...
The first term of a sequence is 2. All subsequent terms are found by adding 3 to the immediately preceding term and then multiplying the sum by 2. Which of the following describes the terms of the sequence? 选项: A、Each term is odd B、Each term is even C、The terms are: even,...