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taylor x23
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Solution
1+23(x−1)−19(x−1)2+481(x−1)3−7243(x−1)4+…
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an=4(−2)n−1
Find the sequence type for an=4(−2)n−1:geometric sequence:r=−2,an=4(−2)n−1
No term was given, finding first term
Find the first term of the sequence an=4(−2)n−1:a1=4