Question 1175846
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Hi
Geometric Sequence:
{{{a[n] = a[1]*r^(n-1)}}}  
{{{a[1] = -12}}}  r = -1/2

{{{a[n] = -12(-.5^(n-1))}}}  
Domain: whole numbers  ≥ 1 
Range: real numbers

Wish You the Best in your Studies.
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