Exercises 2.10.1 Since we know that $$1+x+x^2+x^3+... + x^n \rightarrow \frac{1}{1-x}$$ this suggests the formula $$1+2+4+8+16+... = \frac{1}{1-2} = -1.$$ Do you have any criticisms? See Note 23
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.. = \frac{1}{1-x}$$ is valid only when $$|x| < 1$$. Show more…
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