Calculate LIM (a - 2 + a - 4 +...) +a⌒2n)/(a+a⌒2+a⌒3+… +a⌒n) If the absolute value of a is less than 1, please explain in detail
The upper and lower are the sum of equal ratio sequence
Numerator = a ^ 2 (1-A ^ (2n)) / (1-A ^ 2) denominator = a (1-A ^ n) / (1-A)
Numerator / denominator = a (1 + A ^ n) / (1-A)
|a|
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