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OpenStudy (anonymous):
Help this is super confusing!! Write the recursive formula for the geometric sequence. ^a1=-2 ^a2=8 ^a3=-32
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hartnn (hartnn):
did you notice, a2=a1*(-4) a3=a2*(-4) ??
hartnn (hartnn):
so the recursive formula u can make is \[a _{n}=a _{n-1}*-4\]
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