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Chapter 12: Q 72. (page 809)

In Problems 71-82, find the sum of each sequence.

鈭�k=1408

Short Answer

Expert verified

The sum of this sequence is 400.

Step by step solution

01

Step 1. Write the given information.

The sum of sequence:

鈭�k=1508;k=1,...,50

02

Step 2. Use the formula for sum of sequence. 

The formula for summation is:

鈭�ck=1n=c+c+...+c鈬�鈭�ck=1n=cn,c-realnumber

03

Step 3. Use the formula with c=8 and n=50.

Using the formula gives:

鈭�8k=150=8+8+...+8鈬�鈭�8k=150=50脳8鈬�鈭�8k=150=400

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Most popular questions from this chapter

In Problems 51鈥�60, write out each sum.

鈭�k=0n13k

In Problems 71鈥�82, find the sum of each sequence.

鈭�k=1405

In Problems 29鈥�36, the given pattern continues. Write down the nth term of a sequence ansuggested by the pattern.

1,-1,1,-1,1,-1,...

In Problems 61鈥�70, express each sum using summation notation.

a+ar+ar2+.....+arn-1

In Problems 17鈥�28, write down the first five terms of each sequence.

sn=n2+1
See all solutions

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