Question
Asked Nov 20, 2019
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The question says:

"Find the first 4 terms and the 100th term of the sequence whose nth term is given." 

 

See pic below

n
12. а, 3D (-1)"+1
n + 1
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n 12. а, 3D (-1)"+1 n + 1

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Expert Answer

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Step 1

Given nth term of the sequence is as below

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a(-1) п 1 n+1

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Step 2

To find the first four and 100th  term just substit...

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1 n-1, a () 1+1 (-1 1 а, 2 2 n 2, a() 2+1 4-t-a1(-- 4 lif n is even a(-1) 3 Using (-1) -l if n is odd 2 3 n 3, a (-1) 3 1 4-(-1) 4 3 а, 4 n 4, a, (1) 4+1 -(-1) 5 а, 5 n= 100, a -(-1)100 100 1001 101 100 a,(-1) 101 100 101

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