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Write the recursive formula for the geometric sequence a^1=-2 a^2 =8 a^3 =-32

User Andrea T
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A recursive formula comes in two parts: an initial term or set of terms, and the relationship of subsequent terms to the initial set of terms.
a[1] = -2
a[n] = -4*a[n-1]
User Deanwilliammills
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