Question

An=4+(-1)^n fins the tenth term:)

Answer 1

A10= 4+-1^10= 4-1 = 3

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Answer 2

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5

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step-by-step explanation:

Given,

$a_n$ = 4 + ${(-1)}^{n}$

therefore,

$a_1$ = 4 + ${(-1)}^{1}$

=> $a_1$ = 4 -1 = 3

also,

$a_2$ = 4 + ${(-1)}^{2}$

=> $a_2$ = 4 + 1 = 5

similarly,

$a_{10}$ = 4 + ${(-1)}^{10}$

=> $a_{10}$ = 4 + 1 = 5

Hence,

the required answer is 5.

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concept used :-

♦ even power of negative number is postive.

♦ odd power of negative number is negative.