Crossword #8: Infinite Series

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Across
  1. 3. Convergence interval center-to-edge
  2. 4. ∑1/nᵖ converges when...
  3. 5. What is Evan’s preferred variable?
  4. 6. Taylor series for eˣ
Down
  1. 1. ∑(-1)ⁿaₙ where aₙ decreases
  2. 2. If ratio test L<1