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If az = 8 and an = -3an-1 then find the value of a4.​
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If az = 8 and an = -3an-1 then find the value of a4.​

User Rony Rozen
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The question doesn't make sense.

az = 8, the z should be a #

an = -3an-1, is this supposed to be


a_(n) =-3(a_(n-1) ) ?

What's the z?

User Shehzad Bilal
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