Class 11MathematicsSequences and Seriesnth term of special series, Sum to n terms and Infinite number of terms
MediumWhat is the sum of the series $1 + (1 + x) + (1 + x + x^2) + (1 + x + x^2 + x^3) + \dots$ up to $n$ terms?
- A$\frac{1 - x^n}{1 - x}$
- B$\frac{x(1 - x^n)}{1 - x}$
- C$\frac{n(1 - x) - x(1 - x^n)}{(1 - x)^2}$
- DNone of these
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