1.

Write the first three terms in the sequence defined by.Please answer this question correctly ​

Answer»

Step-by-step EXPLANATION:

i) an = n-4/5

a(1) = 1-4/5

=-3/5

a(2) = 2-4/5

=-2/5

a(3) = 3-4/5

=-1/5

ii) an = (-1)^n-1 5^n+1

a(1) = { - 1}^{1 - 1} 5 ^{1 + 1}

= { - 1}^{0} \times 5 ^{2}

= 1×25 =25

a(2) = { - 1}^{2 - 1} {5}^{2 + 1}

= { - 1}^{1} \times 5 ^{3}

= -125

a(3) = { - 1}^{3 - 1} {5}^{3 + 1}

= { - 1}^{2} \times {5}^{4}

=625


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